Custom Plastic Molding Companies

Last updated: January 2026

This directory lists 123 custom plastic molding companies across the United States, from job shops to vertically integrated manufacturers.

Buyers are typically seeking custom plastic molding solutions when they've moved beyond conceptual design and need to realize a physical product, are scaling production volume, or are encountering issues with existing suppliers related to quality, cost, or capacity. The core challenges often revolve around achieving stringent dimensional tolerances, selecting the optimal polymer – be it an engineering thermoplastic or a thermoset – for specific environmental or mechanical demands, and ensuring robust part ejection and consistent aesthetics without warpage or sink marks. Effective material flow analysis (FEA) and strategic gate locations become critical in addressing these.

The supplier landscape ranges from agile, smaller molders specializing in rapid prototyping and lower volume runs with particular material expertise, to large-scale operations with extensive fleets of high-tonnage presses capable of executing complex multi-shot or overmolding projects for high-volume markets. Some focus exclusively on specific industries like medical (requiring cleanroom molding) or automotive (demanding IATF 16949 certification), while others offer broader capabilities including secondary operations like assembly, ultrasonic welding, or intricate finishing services. Understanding a supplier's core competency and operational scale is crucial for alignment.

The typical buying process for custom plastic molding begins with a comprehensive RFQ package. Buyers should come prepared with fully developed 3D CAD models (preferably STEP or IGES), detailed 2D drawings outlining critical dimensions and tolerances, precise material specifications, estimated annual volumes, and any specific aesthetic or functional requirements. Suppliers expect a willingness to engage in Design for Manufacturability (DFM) discussions to optimize part design for cost-effective and reliable molding, and clarity on expectations around tooling ownership, maintenance, and project timelines.

Full listOne-time purchase · No subscription

Get contact details for all 123 custom plastic molding companies

Verified emails, direct phone numbers, company website URLs, and descriptions — downloadable as a CSV you can load straight into your CRM.

  • 83 verified email addresses
  • 108 direct phone numbers
  • 123 company website URLs
  • Direct links to contact pages
  • CSV download, CRM-ready
  • Lifetime access, no recurring fee
$19.99one time

Secure checkout via Stripe. No account required.

Request custom list

Need more? From $300 for 3,000 company contacts, or $600 with named decision-makers.

Not quite the list you need?

Search any industry, location or job title, free.

5 free results, no card needed.

Want your company featured on this page?

Featured listings are $29/month — shown above this directory, with your logo, description and contact details visible to every visitor.

Get listed

Company Directory

123 companies nationwide

GRIZZLE Industries

aaimsmolding.com
Temecula, CA

Based in Temecula, CA, GRIZZLE Industries provides expert custom injection molding and manufacturing services. They utilize presses ranging from 55 to 500-tons for short and long production runs, working with engineered resins. Services encompass design fusion, tooling, automation, and a dedicated quality assurance team for comprehensive project support.

marketing@aaimsusa.com+19512966200

Action Mold

actionmold.com
Anaheim, CA

Based in Anaheim, CA, Action Mold offers custom plastic molding services with over 30 years of expertise in mold-making and plastic processing. They specialize in precision-driven injection molding, demonstrating mastery of the toughest resins to achieve high-performance results. The company provides comprehensive manufacturing solutions.

contact@actionmold.com+17149780333

Advanced Plastiform, Inc.

advancedplastiform.com
North Carolina, SC

Advanced Plastiform, Inc. provides custom plastic molding and fabrication services, specializing in thermoforming to produce affordable custom plastic parts. Established in 1988, the company serves diverse industries and businesses across North Carolina, South Carolina, Maryland, Georgia, and Pennsylvania, offering cost-effective solutions.

andrew@theedigital.com+19194042080

Advance Plastics

advanceplastics.com
National City, CA

Based in National City, CA, Advance Plastics is a custom plastic injection molder established in 1978. The company provides custom plastic injection molding parts and tooling, with a production floor operating 24 hours daily. They offer individualized customer service, utilizing molds built by their trusted supplier, IMS.

sales@advanceplastics.com+16194771893

Aire Plastics, Inc.

aireplastics.com
La Vernia, TX

Based in La Vernia, TX, Aire Plastics, Inc. provides plastics manufacturing solutions. Specializing in injection molding, they offer services from initial concept and design engineering to assembly and packaging. The company supports projects from concept to distribution, ensuring efficient production of custom plastic components.

contact@aireplastics.com+18307792289

Alliance Precision Plastics

allianceppc.com
Rochester, NY

Alliance Precision Plastics specializes in custom plastic molding, offering plastic injection molding, in-house tooling, design, and engineering solutions. The company provides value-add assembly and quality assurance services. Serving industries including energy & utility, industrial manufacturing, medical & life science, and specialty markets, Alliance delivers engineered component parts.

sales@allianceppc.com+15854265310

Autronic Plastics, Inc.

apisolution.com
Long Island, NY

Autronic Plastics, Inc. is a custom plastic injection molding company providing services from concept to completion. With in-house designers and engineers, they specialize in difficult-to-process engineering resins, metal replacement, and precision plastic components. API offers a full-service mold shop, on-site tool room, and rapid prototyping capabilities.

sales@apisolution.com+15163337577

Aprios Custom Manufacturing

aprios.com
Minneapolis, MN

Aprios Custom Manufacturing, based in Minneapolis, MN, provides innovative solutions for custom plastic molding. They specialize in design for manufacturing, prototype and production tooling, and diverse injection molding techniques, including overmolding, insert molding, and micro-molding. The company operates presses ranging from 15 to 610 tons.

sales@aprios.com+17632972613

ASPEC Plastics

aspecplastics.com
Cincinnati, OH

Based in Cincinnati, OH, ASPEC Plastics is a custom thermoplastic manufacturer. They specialize in plastic injection molding and insert molding, offering comprehensive in-house capabilities from design and mold-making to production and secondary operations. ASPEC serves industrial and commercial product manufacturers, providing a single source for custom plastic parts.

info@aspecinc.com+15135619922

Associated Plastics Corporation

associatedplasticscorp.com
Ada, OH

Based in Ada, OH, Associated Plastics Corporation is a custom plastic injection molding company. They offer engineering and design assistance, utilizing a wide variety of generic to engineered resins. With 2000-ton machining capabilities, APC provides turnkey operations for industries like automotive, electronic, food processing, sports, toy, and horticulture.

gwolber@associatedplasticscorp.com+14196340460

Automation Plastics Corporation

automationplastics.com
Aurora, OH

Based in Aurora, OH, Automation Plastics Corporation is an ISO 9001:2015 certified custom molder of thermoplastic injection molded parts. Since 1980, they have specialized in high-volume production of precision plastics, including tight tolerance functional components and heavy wall parts for specialty fittings. They also offer precision plastic machining and engineering support.

sales@automationplastics.com+13305625148

Bayview Plastic Solutions, Inc.

bayviewplasticsolutions.com
Fremont, CA

Based in Fremont, CA, Bayview Plastic Solutions, Inc. specializes in plastic fabrication and custom manufacturing. They offer in-house mold making, vacuum forming, and custom plastic product solutions for prototyping and production. Their capabilities support diverse industries, including medical devices, transportation, contract manufacturing, technology, government, and retail & store displays.

info@bayviewplasticsolutions.com+15103600001

Bentley Injection Molding

bentleyinjectionmolding.com
Mesquite, TX

Bentley Injection Molding, based in Mesquite, TX, specializes in custom plastic injection molding solutions. The company provides services for diverse sectors, including the oil industry for drilling rig components, medical devices, and schools for exterior warning lights. They also produce automotive plastic parts and offer injection molding tooling.

sales@bentleyco.com+19722892750

Boedeker Plastics

boedeker.com
Shiner, TX

Based in Shiner, TX, Boedeker Plastics specializes in custom plastic injection molded and CNC machined parts. They also provide a substantial inventory of plastic sheet, rod, and tube materials, offering cut-to-size services and same-day shipping for industrial applications requiring engineered plastic components.

ecom@boedeker.com+18004443485

Cary Products

caryproducts.com
Hutchins, TX

Cary Products, based in Hutchins, TX, is a custom plastic manufacturer. The company specializes in injection molding and thermoforming services, offering full-service manufacturing and tooling solutions. With over 75 years of expertise, it serves industries including automotive, energy, agriculture, construction, and commercial markets.

info@caryproducts.com+19722254271

Crown Plastics Usa

ccmolding.com
Benicia, CA

Based in Benicia, CA, Crown Plastics Usa offers custom plastic injection molding and assembly. Services range from rapid prototyping to low-volume and mass production. Capabilities include tooling design, material choices, and mold construction, utilizing presses from 28 to 400 tons within a 30,000 sq ft facility.

rosalie@ccmolding.com+17075640525

Central Plastics

centplasticmfg.com
Tracy, CA

Based in Tracy, CA, Central Plastics is a custom plastic manufacturer specializing in injection molding, thermoforming, and injection stretch blow molding. They offer tooling and value-added services for diverse markets such as healthcare, aerospace, packaging, defense, and electronics. The company is ISO 13485:2016 and AS 9100 Rev D certified.

info@centplasticmfg.com+12095325146

C&J Industries

cjindustries.com
Meadville, PA

Based in Meadville, PA, C&J Industries specializes in high-precision custom plastic injection molding and contract manufacturing. They offer two-shot molding, assembly, and advanced finishing. Serving medical, pharmaceutical, technology, and automotive industries, C&J Industries is ISO 13485:2016, ISO 9001:2015, and FDA registered, operating Class 7 & 8 Cleanrooms.

sales@cjindustries.com+18147244950

Quality Plastics

cmtc.com
Alhambra, CA

Based in Alhambra, California, Quality Plastics offers custom injection molding services. They provide plastic injection molds, molded parts, and complete plastic products. The company emphasizes precision, consistency, and quality to meet various industries' custom plastic component and production needs.

comm@cmtc.com+16264588023

Cooper Plastics

cooperplastics.com
Whiting, IN

Based in Whiting, IN, Cooper Plastics is a custom plastic manufacturer, established in 2023 as a division of PolyJohn Enterprises. They specialize in transforming thermoplastic materials into dependable plastic parts. Capabilities include sheet extrusion, thermoforming, rotational molding, injection molding, structural foam injection molding, and blow molding.

harold.clemens@cooperplastics.com+12193145716

Crescent Industries

crescentind.com
Freedom, PA

Crescent Industries, located in Freedom, PA, provides custom injection molding, tooling, and post-molding services. With over 75 years of experience, the company delivers solutions based on design for manufacturing principles. They serve diverse sectors including medical, pharmaceutical, defense, military, and industrial product markets, offering precision manufacturing.

sales@crescentind.com+17179288291

Currier Plastics

currierplastics.com
Auburn, NY

Currier Plastics provides custom injection molding and custom blow molding services, along with tooling and design engineering expertise. They specialize in building high-quality plastic components for industries such as healthcare and packaging, emphasizing superior value and efficient velocity in their US-based operations.

info@currierplastics.com+13152551779

Cypress Industries

cypressindustries.com
Austin, TX

Based in Austin, Texas, Cypress Industries provides ISO 9001:2000 UL Certified custom plastic injection molding and mold manufacturing. They specialize in plastics design, mold making, and tooling. With manufacturing facilities in the US and China, the company offers quick-turn or low-cost custom tooling solutions for injection molding projects.

info@cypressindustries.com+12145501226

Damar Plastics

damarplastics.com
El Cajon, CA

Based in El Cajon, CA, Damar Plastics specializes in plastic injection and blow molding manufacturing for customers in Southern California. The company offers a roadmap from vision to reality, including services like design, mold manufacturing, injection and blow molding, and various value-added solutions.

sales@damarplastics.com+16192832300

Executool

executool.net
Erie, PA

Based in Erie, PA, Executool specializes in complete design and manufacturing of close tolerance plastic injection molds. They provide precision injection molding services for tight tolerance engineering-grade resin polymers. Executool serves the automotive, electronic, and medical industries, also offering mold repair and production improvement.

info@executool.net+18148361141

Houston Plastic Products

houstonplasticproducts.com
Houston, TX

Based in Houston, TX, Houston Plastic Products specializes in plastic injection molding, producing quality custom components. The company serves a diverse range of industries including energy, medical, automation, and consumer sectors, providing tailored solutions for various application needs.

sales@houstonplastic.com+17137231104

Integrated Molding Solutions

ims-tex.com
Houston, TX

Based in Houston, TX, Integrated Molding Solutions (IMS) specializes in custom plastic manufacturing and injection molding services. The company leverages technology to provide advanced solutions in plastic molding, catering to diverse industry needs.

info@ims-tex.com+12815879996

Innovative Plastic Molders

ipmolders.com
Vandalia, OH

Innovative Plastic Molders, based in Vandalia, OH, specializes in custom plastic injection molding. They operate over 30 electric presses, ranging from 75 to 1,700 tons, in a 120,000 sq ft facility. The company processes engineer-grade polymers and offers value-added services such as decorating, assembly, and specialized packaging.

sales@ipmolders.com+19378983775

JACO Manufacturing

jacomfg.com
Berea, OH

Based in Berea, OH, JACO Manufacturing specializes in custom molded, close tolerance plastic parts. They provide comprehensive in-house capabilities, from engineering design and custom tooling to injection molding production and quality assurance. JACO transforms ideas into finished, high-quality plastic components from its United States-based operations.

info@jacomfg.com+14402344000

JATCO

jatco.com
Modesto, CA

Based in Modesto, CA, JATCO provides plastic molding production, assembly, packaging, storage, and distribution services. Leveraging over forty years of experience, the company serves a wide variety of industries, offering comprehensive custom plastic molding solutions from manufacturing to final delivery.

steven.ames@jatco.com+12094974297

JDI Plastics

jdiplastics.com
Palatine, IL

Based in Palatine, IL, JDI Plastics is a custom injection molding company that specializes in providing high-quality plastic products. They simplify customer supply chains through production management and value-added services, tailoring solutions to individual client needs.

sales@jdiplastics.com+18157595640

K&B Molded Products

kandbmoldedproducts.com
Brookville, OH

Based in Brookville, OH, K&B Molded Products is an ISO 9001:2015 Certified provider specializing in plastic injection molding, custom molds, and tooling. They offer turnkey solutions and a proven 6-stage process designed to streamline product development and manufacturing. Capabilities include sonic welding, over-molding, and hot stamping for diverse applications.

sales@kandbmoldedproducts.com+19378332178

King's ECO Plastics

kingsecoplastics.com
Mcallen, TX

Based in McAllen, TX, King's ECO Plastics is an ISO/TS 16949:2009 & UL certified company specializing in custom precision injection molding. With over 30 years of experience, they offer services including part design, prototyping, material selection, pad printing, general assembly, and customized post-molding operations.

sales@kingsecoplastics.com+19566311115

KS Plastic

ksplastic.com
San Jose, CA

Based in San Jose, CA, KS Plastic operates a 55,000-square-foot manufacturing facility. The company specializes in precision injection molding, providing custom plastic molding solutions. They are specially equipped to serve industries requiring high-precision components, including medical devices and diagnostic applications.

mbauer@ksplastic.com+14089449407

Medway Plastics Corporation

medwayplastics.com
Pflugerville, TX

Medway Plastics Corporation provides custom plastic injection molding since 1974, with facilities in Long Beach, CA, and Round Rock, TX. They manufacture a wide range of plastic products, handling diverse part sizes. The company prioritizes sustainable processes, utilizing an electric co-generation system for energy and recycling plastic scrap.

info@medwayplastics.com+15626301175

Meridian Products Corp.

meridianproductscorp.com
Dallas, TX

Based in Dallas, TX, Meridian Products Corp. offers custom injection molding, tooling, and assembly services. They work with materials like ABS, nylon, and polycarbonate for industries including aerospace, automotive, medical, electronics, and consumer. Capabilities encompass prototyping, design, and post-molding decorating, providing comprehensive manufacturing solutions.

info@meridianproductscorp.com+19724847300

Metro Custom Plastics

metrocustomplastics.com
—

Metro Custom Plastics specializes in conventional plastic injection molding, with over 50 years of experience. Their 14-machine, 24-hour shop processes diverse materials, accommodating clamping forces from 230 to 560 tons and shot sizes up to 80 ounces. They support both prototype and large production orders.

webleads@metrocustomplastics.com+18176405646

Midland Plastics, Inc.

midlandplastics.com
New Berlin, WI

Midland Plastics, Inc. offers custom plastic manufacturing and forming technology from its New Berlin, WI location. Services include machining, thermoforming, and custom fabrication, alongside custom extrusions. The company also distributes a variety of plastic materials, specializing in high-performance plastics, with operations dating back to 1945.

info@midlandplastics.com+18883723113

Midwest Mold Services

midwestmold.com
Roseville, MI

Based in Roseville, MI, Midwest Mold Services specializes in plastic part development and manufacturing. They build production and pre-production plastic injection tooling, offering comprehensive services including low volume, 2-shot, and conventional plastic injection molding for custom parts. The company aims to optimize efficiency in plastic component development.

midwestmold@midwestmold.com+15868888800

Mission Plastics, Inc.

missionplastics.com
New Rochelle, NY

Mission Plastics, Inc. provides full-spectrum custom injection molding services, including insert and micro-molding. This ISO 13485 certified manufacturer operates 24/7, offering mold making, prototyping, and fulfillment solutions. With three decades of experience, they serve high-volume OEM customers in the Medical, Automotive, and Commercial industries.

info@dream-theme.com+19099477287

Molding Dynamics, Inc.

moldingdynamics.net
—

Molding Dynamics, Inc. specializes in custom plastic injection molding, adept at meeting tight tolerances and working with engineering grade and commodity resins. Their capabilities include overmolding, executed with precision and high standards of quality from engineering through delivery for exceptional results.

sales@moldingdynamics.net+14407868100

Midwest Precision Molding

mpmplastics.com
Lake Geneva, WI

Based in Lake Geneva, WI, Midwest Precision Molding provides custom plastic injection molding services. The company specializes in producing custom plastic gears, inserts, and bobbins, focusing on tight tolerance and precision. With over 40 machines, including new Sodick presses, and an onsite tool room, they offer comprehensive molding solutions.

sales@mpmplastics.com+12622495620

MTM Molded Products Co.

mtmmolded.com
Dayton, OH

Based in Dayton, OH, MTM Molded Products Co. provides custom plastic molding services for durable, American-made plastic boxes and cases. They specialize in protection and organization solutions, offering over 100 styles of living-hinged boxes made from prime-grade plastic. Options include various colors, foam inserts, and custom branding.

nminneman@mtmcase-gard.com+19378907376

Myco Plastics, Inc.

mycoplastics.com
Jacksonville, TX

Myco Plastics, Inc. provides custom injection molding services and precision plastic parts. Operating since 1982, the company serves government and industry markets. Based in Jacksonville, TX, it recently acquired property for expansion, aiming to increase warehousing and production space to meet growing demand.

myco@mycoplastics.com+19035860551

Norck

norck.com
—

Norck specializes in custom plastic molding, offering end-to-end support from prototyping to mass production. Services include injection molding, design for manufacturability, material selection, and moldflow simulation. They manufacture custom plastic parts for diverse industries, including medical (orthosis and prosthesis devices) and industrial applications.

info@norck.com+19492320251

Norco Plastics, Inc.

norcoplastics.com
Chino, CA

Based in Chino, CA, Norco Plastics, Inc. specializes in custom plastic injection molding services. They utilize large tonnage equipment up to 2800 tons, offering 24/7 production capabilities and end-to-end manufacturing solutions. Services include assembly and secondary operations for industries such as automotive, construction, medical, agricultural, and consumer products.

john@norcoplastics.com+19093934000

Performance Engineered Products

pepincplastics.com
Pomona, CA

Based in Pomona, CA, Performance Engineered Products manufactures custom, injection molded plastics. They offer mold manufacturing, reverse engineering, and complex plastic component assembly, including sonic welding. The company serves highly technical industries such as Aerospace, Defense, Automotive, Life Sciences, and Medical Devices.

sales@pepincplastics.com+19095947487

Pioneer Plastics

pioneerplastics.com
Dixon, KY

Pioneer Plastics, based in Dixon, KY, specializes in American-made custom plastic injection molding for Original Equipment Manufacturers (OEMs). The company offers services from design consultation to production, focusing on delivering high-quality, on-time, and on-budget custom plastic parts. They emphasize ensuring optimal fit and function for all components.

sales@pioneerplastics.com+18009511551

Plastic Injection Molding

plastic-injectionmolding.com
—

This company specializes in the design and creation of custom molds. They utilize these molds to produce high-quality plastic parts precisely according to client specifications. Their services cater to various clients requiring custom plastic components and products, ensuring precision and quality in manufacturing.

info@plastic-injectionmolding.com+19179939690

Plastic Molding Manufacturing

plasticmoldingmfg.com
Hudson, MA

Based in Hudson, MA, Plastic Molding Manufacturing is a U.S.-based custom plastic injection molding company. They provide full-service solutions, including design-for-manufacturing support, precision tooling, insert, and two-shot molding. They offer scalable production for diverse industries, notably medical, with ISO 8 cleanroom capabilities and manage tool transfers.

sales@plasticmoldingmfg.com+19785671000

Plastimold Products

plastimoldproducts.com
Delray Beach, FL

Based in Delray Beach, Florida, Plastimold Products is a plastic injection molding company with over 22 years of experience. They provide services including engineering, tooling, injection molding, and assembly for custom plastic components.

hello@plastimoldproducts.com+15618690183

Polymation

polymation.com
Thousand Oaks, CA

Based in Thousand Oaks, CA, Polymation provides injection-molded plastics. The company designs, builds, and mass produces plastic components, offering comprehensive plastic injection molding services. They serve various industries, including medical, dental, and commercial, producing parts and components for client equipment needs.

mark@polymation.com+18058442921

Polymershapes

polymershapesfab.com
Santa Fe Springs, CA

Based in Santa Fe Springs, CA, Polymershapes provides custom plastic fabrication and molding services. Capabilities include CNC and laser processing, thermoforming, and plastic molding. The company also distributes plastic sheets, rods, tubes, and film, offering material conversion for custom plastic product manufacturing needs.

plasticfab@polymershapes.com+15622427998

Precision Molded Plastics, Inc.

precisionmoldedplastics.com
Upland, CA

Precision Molded Plastics, Inc. is a plastic injection molding company that builds custom molds, tooling, and manufactures parts. It provides value-added services for clients in medical, aerospace, food and beverage, construction, and agriculture industries, committed to environmental preservation and recycling.

info@precisionmoldedplastics.com+19099819662

PSI Molded Plastics

psimp.com
Marion, SC

PSI Molded Plastics is a custom injection molder providing small to large molded parts. They specialize in structural foam molding and gas assist molding, offering capabilities like post-mold finishing, value-add assembly, and custom color matching. With manufacturing locations in South Carolina, Indiana, and New Hampshire, they support both low and high volume requirements for diverse customer needs.

info@psimp.com+16035695100

Quality Plastics LLC

qualityplasticsllc.com
Fredericksburg, OH

Based in Fredericksburg, OH, Quality Plastics LLC specializes in custom injection molding. They offer versatile solutions encompassing engineering, prototyping, assembly, and packaging, utilizing their capabilities to provide comprehensive services for custom plastic products.

sales@qualityplasticsllc.com+13306955920

Quantum Plastics

quantumplastics.com
—

Quantum Plastics is a global supplier specializing in custom injection molding, blow molding, and assembly services. They handle projects requiring tight tolerances and complex geometries, delivering quality solutions. The company serves various sectors, including the Automotive and Appliance industries.

info@quantumplastics.com+18442206677

Quickparts

quickparts.com
Seattle, WA

Based in Seattle, WA, Quickparts provides custom plastic injection molding services. Their extensive capabilities also include CNC machining, stereolithography (SLA), selective laser sintering (SLS), cast urethane, direct metal printing (DMP), sheet metal, die casting, and rapid prototyping, offering diverse manufacturing solutions.

team.uk@quickparts.com+19317667290

Rage Plastics

rageplastics.com
—

Rage Plastics provides comprehensive custom plastic manufacturing solutions, including injection molding and injection stretch blow-molding. They offer extensive engineering services, from product design and material selection to mold building and production planning, ensuring high-quality, high-precision product manufacturing and exceeding customer expectations.

customerservice@rageplastics.com+16147714771

RMC Plastics

rmcplastics.com
Houston, TX

Based in Houston, TX, RMC Plastics specializes in custom injection molding services, manufacturing precision plastic and rubber molded parts. The company assists clients with design, tooling, and material selection. Serving diverse sectors including consumer products, oil & gas, medical, and electric utility, RMC Plastics produces high-quality, made-in-the-USA products.

customerservice@rmcplastics.com+12814475727

SeaGate Plastics

seagateplastics.com
Toledo, OH

Based in Toledo, OH, SeaGate Plastics specializes in providing custom plastic solutions, including custom and standard extrusions, injection molded components, CNC machining, fabrication, and assembly. Founded in 1987, the company serves industrial, packaging, construction, and OEM customers with in-house tooling and engineering support.

sales@seagateplastics.com+14198785010

Springboard Manufacturing

springboardmfg.com
Kearney, NE

Springboard Manufacturing specializes in custom plastic injection molding for medical devices. Based in Kearney, NE, the company offers a full range of plastic molding capabilities, including overmolding and insert molding. They efficiently mass-produce parts using diverse thermoplastic materials, operating as an ISO 13485:2016 certified provider.

help@springboardmfg.com+19168530717

Southwest Quality Molding

sqminc.net
Manvel, TX

Southwest Quality Molding, based in Manvel, TX, provides custom tight tolerance injection molding services. The company manufactures quality thermoplastics, producing custom plastic parts for short and long runs. They serve diverse government and commercial clients across industries including oil, energy, automotive, and packaging.

destes@sqminc.net+12816434500

Summit Plastic Molding

summitplasticmolding.com
Shelby Township, MI

Summit Plastic Molding provides full-service custom injection molding from 85 to 1000 ton. Based in Shelby Township, MI, they specialize in prototyping and production for the automotive, medical, and defense sectors. Their capabilities encompass engineering, tooling, and manufacturing, supported by facilities in Michigan, Texas, and China.

ngedeon@summitplasticmolding.com+15862624500

Tamarack Industries

tamarackindustries.com
Yakima, WA

Tamarack Industries, based in Yakima, WA, provides custom plastic injection molding services for businesses across California and the West Coast. They offer fast turnaround, full-service production, and no minimums, producing durable, consistent plastic parts. The company also specializes in custom thermoforming.

info@tamarackindustries.com+15094523330

Pleasant Precision, Inc.

teamppi.com
Kenton, OH

Based in Kenton, OH, Pleasant Precision, Inc. provides contract manufacturing services for the plastic industry. The company offers injection molding, mold making, and extrusion capabilities, supporting clients from product design to finished molded products. They aim to deliver high-quality parts.

dbray@teamppi.com+18008603974

PTI Engineered Plastics

teampti.com
Macomb, MI

PTI Engineered Plastics, based in Macomb, MI, specializes in custom plastic injection molding for low to medium volume production. They serve the medical, defense, electronic, and consumer device industries. The company provides in-house tooling, scientific molding processes, a Class 8 cleanroom, and engineering support from concept to production.

info@teampti.com+15862635100

TechStar Molding

techstarmolding.com
Houston, TX

Based in Houston, TX, TechStar Molding specializes in custom plastic injection molding services. Their capabilities encompass design support, prototyping, precision tooling, high-quality molding, and value-added services like assembly, packaging, and logistics. They serve businesses of all sizes, offering solutions for new tooling development or running existing molds.

info@techstarmolding.com+12814870377

Teel Plastics

teel.com
Baraboo, WI

Teel Plastics provides custom plastic products, offering extrusion for tubing, piping, and profiles, alongside injection molding services. Based in Baraboo, WI, capabilities include new product design and custom compounding for various resins. They serve diverse industries such as medical devices, cosmetics, industrial pipe, and water treatment.

tkarst@teel.com+16083553080

TNT Plastic Molding

tntplasticmolding.com
Corona, CA

Based in Corona, CA, TNT Plastic Molding is a manufacturer of custom plastic molded parts. The company specializes in injection mold tooling, custom injection molding, and insert molding. They offer engineering expertise and contract manufacturing, including fully-staffed assembly and finishing operations, dedicated to mission-critical applications.

dennis@tntplasticmolding.com+19518089700

Trenton Plastics

trentonplastics.com
Trenton, TX

Based in Trenton, TX, Trenton Plastics specializes in custom injection, transfer, and compression molding for plastic and rubber products. They process various materials, from standard to engineered resins. The company provides molding solutions to diverse industries, including aerospace, defense, oil & gas, telecom, electronics, medical, and food & drug sectors.

info@trentonplastics.com+19039892232

T&R Tooling

trtooling.com
Valley View, TX

Based in Valley View, TX, T&R Tooling provides end-to-end plastic injection molding and custom tooling services. They offer design, DFM optimization, prototyping, and production. Capabilities include mold building, repair, transfer, post-molding services, assembly, and inventory stocking for complete plastic part manufacturing.

info@trtooling.com+19407266020

Texas Injection Molding

tu.org
—

Texas Injection Molding specializes in supplying engineering grade plastic parts. They provide custom plastic molding solutions for manufacturers and end-use product companies, delivering precise components tailored to specific industry needs and supporting diverse production requirements.

jeff@tx-im.com+12814894292

USA Injection Molding

usainjectionmolding.com
Cleveland, OH

Based in Cleveland, OH, USA Injection Molding is a full-service plastic injection molding facility. They provide prototype design, manufacturing, and fulfillment services. The company designs, manufactures, and distributes plastic components within the USA, offering competitive prices for custom projects.

lheestand@usainjectionmolding.com+13305870010

Valencia Plastics Inc

valenciaplastics.com
Valencia, CA

Based in Valencia, CA, Valencia Plastics Inc. manufactures custom plastic injection and blow molded products. They specialize in high-volume production of parts and containers, including HDPE wide-mouth canisters. The company utilizes up to 100% post-consumer resin and food-grade materials like Eco Prime / Envision for their manufacturing processes.

info@valenciaplastics.com+18445742040

WeCutFoam

wecutfoam.com
Sunnyvale, CA

Based in Sunnyvale, CA, WeCutFoam offers custom mold making services to reproduce objects in large quantities. They utilize molds, sometimes made from plastics, for fabricating products from polyurethane, silicone rubber, concrete, plaster, and foam. Services support diverse applications, from prototypes to consumer goods.

sales@wecutfoam.com+14084546163

World Class Plastics Inc.

worldclassplastics.com
Russells Point, OH

World Class Plastics Inc. based in Russells Point, OH, specializes in precision injection molding. They offer engineering, design, and in-house tool and mold building, utilizing highly automated processes. Value-added services include assembly, pad printing, ultrasonic staking, and insert molding for diverse industrial applications.

sales@worldclassplastics.com+19378434927

YIJIN Solution

yijinsolution.com
Homestead, FL

YIJIN Solution offers comprehensive rapid prototyping and manufacturing services, specializing in custom plastic injection molding. Capabilities range from tooling to mass production for diverse industries. Additional services include CNC machining, 3D printing, sheet metal fabrication, and vacuum casting to meet various project requirements.

info@yijinsolution.com+18889966019

Blackwell Plastics

blackwellplastics.com
Houston, TX

Based in Houston, TX, Blackwell Plastics specializes in custom injection molding and plastic extrusion for OEM manufacturers. They provide engineering grade thermoplastic resins, supporting projects from design to fulfillment with in-house tooling, assembly, and finishing. Industries served include Life Sciences, Industrial, Electronics, Energy, and Aerospace.

sales@blackwellplastics.com

MSI

msi-mold.com
Imlay City, MI

Based in Imlay City, MI, MSI provides plastic injection molding and CNC machining services. They manufacture custom plastic and metal parts, with all tooling and production handled in-house in the USA. MSI is ITAR and ISO 9001 certified, offering a reliable single source for custom part manufacturing.

sales@msi-mold.com

PCBWay

pcbway.com
—

PCBWay provides online injection molding services, specializing in rapid molds and production tooling. They offer custom molded prototypes and production parts, emphasizing fast lead times for various project needs.

service@pcbway.com

RYD Tooling

rydtooling.com
—

RYD Tooling specializes in custom plastic injection molding services. They provide comprehensive solutions, encompassing parts design, prototyping for injection molding, and precision injection mold making. The company manufactures plastic injection molded products, offering robust capabilities for diverse client needs.

marketing@rydtooling.com

TPM

tpmmfg.com
Hopkins, MN

TPM specializes in precision injection molding, providing custom solutions for components with tight tolerance and complex geometry. The company offers injection, 2-shot, insert, and thermoset molding services, along with automated assembly and testing. They serve diverse markets including automotive, consumer, industrial, small engine, packaging, and medical sectors.

inquiries@tpmmfg.com

20/20 Custom Molded Plastics

2020cmp.com
Holiday City, OH

20/20 Custom Molded Plastics provides custom plastic molding solutions, specializing in high and low pressure injection molding. Their capabilities include structural foam, structural web/gas assist, engineering, tooling, and quality assurance. They focus on product development for cost reduction and superior part performance, operating from facilities in Ohio, Indiana, and Georgia.

+14194852020

All-Plastics

all-plastics.com
Kerrville, TX

Based in Kerrville, TX, All-Plastics provides comprehensive plastic injection molding and assembly solutions to customers. Their technical team focuses on delivering quality and on-time delivery for various demands. The company offers precision plastics solutions and utilizes scientific molding techniques in its manufacturing facility.

+19722392686

Bee Jay Molding Inc.

beejaymolding.com
Boerne, TX

Based in Boerne, TX, Bee Jay Molding Inc. is a family-owned company that specializes in custom-injected plastic components. They provide comprehensive post-production services including ultrasonic welding, assembly, and packaging for various plastic products.

+18302492425

Bennett Plastics

bennettplastics.com
Paterson, NJ

Based in Paterson, NJ, Bennett Plastics specializes in custom plastic injection molding. With over 40 years of experience, the company provides high-quality, U.S.-made plastic parts. They offer comprehensive molding services for custom components, leveraging their extensive manufacturing expertise.

+19736841501

Cadrex

cadrex.com
—

Cadrex is a contract manufacturer that provides custom plastic injection molding solutions. The company specializes in serving OEM's, offering expertise in various stages of the manufacturing process and delivering tailored plastic components designed for industrial applications.

+12606224150

California Quality Plastics

calplastics.com
Ontario, CA

Based in Ontario, CA, California Quality Plastics offers custom plastic manufacturing and fabrication. Its Bel-Air Cases division specializes in durable, custom ABS plastic shipping and carrying cases with extensive customization options. Anything Plastic provides custom plastic items for entertainment, OEM, and military applications, alongside general fabrication services.

+19099305535

California Sealing Solutions

casealingsolutions.com
Irvine, CA

Based in Irvine, CA, California Sealing Solutions provides custom plastic injection molding services, including gas assist, insert, and overmolding. They also offer plastic extrusion and secondary operations such as ultrasonic welding, milling, and painting to deliver greater value for various plastic parts.

+19496551007

Coastal Plastics Molding, Inc.

coastalplastics.com
Houston, TX

Based in Houston, TX, Coastal Plastics Molding, Inc. is a family-owned company offering custom plastic injection molding and thermoplastic parts since 1984. They provide in-house design engineering, tooling, quality inspection, and assembly services. The company utilizes a modern 180-ton JSW all-electric molding machine for precise production.

+18773317909

Custom Molded Products LLC

custommolded.com
—

Custom Molded Products LLC provides turnkey injection molding services, handling projects from prototype to high-volume production. They specialize in two-shot molding, PVC molding, and overmolding, operating 34 molding machines. The company also offers assembly, pad printing, packaging, and inventory services, solving complex injection molding challenges for various industries.

+19373821070

Custom Molds and Plastics

custommoldsplastics.com
Red Lion, PA

Based in Red Lion, PA, Custom Molds and Plastics has operated since 1984 as a plastic injection molding company. They provide comprehensive services for plastic injection molding needs, emphasizing consistent customer satisfaction and clear communication with clients. The company focuses on quality and customer service.

+17172462652

Custom Plastic Forming

customplasticforming.com
Salisbury, NC

Based in Salisbury, NC, Custom Plastic Forming specializes in both heavy- and thin-gauge custom thermoforming services. The company offers turnkey plastic forming solutions, including design, engineering, 3D printing, toolmaking, CNC routing, and fabrication. They work with various materials like Kydex, PETG, HIPS, and ABS, serving applications such as medical packaging and assembly trays.

+18007571693

Emco Industrial Plastics, Inc.

emcoplastics.com
Cedar Grove, NJ

Emco Industrial Plastics, Inc. offers custom injection molding services for various applications. Additionally, they provide extensive custom plastics fabrication, including CNC machining, laser cutting, plastic welding, and thermoforming of plastic and rubber components. Serving industries such as aerospace, automotive, medical, and OEM, they deliver custom solutions nationwide.

+19732390202

Ferriot Inc.

ferriot.com
Akron, OH

Based in Akron, Ohio, Ferriot Inc. is a full-service contract manufacturer providing custom injection molding services. The company offers structural foam molding, engineering, supply chain management, decorating, and final assembly. They manufacture a variety of custom plastic molded parts that American consumers interact with daily.

+13307863000

J&O Plastics

jandoplastics.com
Rittman, OH

Based in Rittman, OH, J&O Plastics offers custom injection molding, specializing in clear plastic products. They work with materials like PET, acrylic, polypropylene, SAN, and PVC for consumer, medical, industrial, and agricultural clients. Comprehensive services include assembly, labeling, packaging, inventory management, and direct shipping to major retailers.

+13309273169

JG Plastics Group LLC

jgplastics.com
Costa Mesa, CA

Based in Costa Mesa, CA, JG Plastics Group LLC provides custom plastic injection molding, tooling, and assembly services. Operating since 1975, their facility includes Class 10,000 cleanrooms. They hold ISO 13485, ISO 9001, AS 9100, ITAR, and FDA compliance for regulated industries.

+17147514266

Ohio Precision Molding, Inc.

ohioprecisionmolding.com
Barberton, OH

Based in Barberton, OH, Ohio Precision Molding, Inc. specializes in custom plastic injection molding. Services include product design, engineering, prototyping, rapid tooling, 3D printing, and full production. They offer material selection, short run manufacturing, assembly, and molded parts decorating for diverse industries.

+13307459393

Plastics Plus Technology

plasticsplus.com
—

Plastics Plus Technology provides close-tolerance custom plastic injection molding and value-added services, including secondary operations, packaging, and mold making. This woman-owned, USA contract manufacturer serves medical, automotive, dental, and electronic component industries. They are ISO 9001:2015, ISO 13485:2016 certified, and FDA registered.

+19097470555

Plastic Molded Concepts, Inc.

pmcplastics.com
Eagle, WI

Based in Eagle, WI, Plastic Molded Concepts, Inc. specializes in custom plastic injection molding. The company is recognized for its expertise in molding engineered resins, providing specialized solutions for various industrial applications. They offer comprehensive services, focusing on precision and quality in their manufacturing processes.

+12625945050

Rapid Molding

rapidmolding.com
—

Rapid Molding provides on-demand manufacturing for custom plastic injection molded parts, from prototypes to high-volume production. They offer prototype, bridge, and rapid production molding, integrating features like sharp corners with EDM, undercuts, threaded holes, insert, and over molding for high-quality, timely component delivery.

+13305950000

The Rodon Group

rodongroup.com
Hatfield, PA

Based in Hatfield, PA, The Rodon Group specializes in high-volume custom plastic injection molding. The company provides high-quality, low-cost manufacturing solutions, delivering efficient and precise production of custom plastic components through advanced injection molding processes for various applications.

+18005238792

Southwest Plastics

southwestplastics.com
Glendora, CA

Based in Glendora, CA, Southwest Plastics specializes in custom plastic molding services. The company offers precision thermoplastic injection molding, thermoset molding, transfer molding, and compression molding. They manufacture durable, high-performance components and precise, resilient parts for demanding applications, utilizing a range of plastic molding capabilities.

+16269636919

Spectrum Plastics Group

spectrumplastics.com
—

Spectrum Plastics Group specializes in custom plastic injection molding solutions for complex, tight-tolerance projects. They produce premium, high-quality components and fully assembled medical devices using highly engineered performance medical plastics. The company serves various medical applications, including orthopedic, dental, and gastrointestinal.

+14045648560

SR Plastics

srplasticsmolding.com
Norco, CA

Based in Norco, CA, SR Plastics provides custom injection molding services, utilizing engineered plastic and thermoplastic rubber materials. They offer in-house secondary operations, including sonic welding, over molding, hot stamping, and assemblies. They serve Aerospace, Medical, and Fuel Management Systems industries, adhering to AS9100 and ISO:9100 quality standards.

+19515209486

Superior Plastics

superiorplastics.com
Fort Worth, TX

Based in Fort Worth, TX, Superior Plastics specializes in custom plastic injection molding and mold building services. With over 34 years of experience, they provide precision manufacturing, drop shipping, and private labeling for industries such as electronics, industrial, military, oil field, and telecommunications. The company holds ISO 9001:2015, AS9100D, and ITAR certifications.

+18178829595

Texas Injection Molding

texasinjectionmolding.com
Houston, TX

Based in Houston, TX, Texas Injection Molding provides custom plastic injection molding services, offering product design assistance and engineering. They serve OEM manufacturing and consumer product markets across diverse sectors like electronics, food & beverage, medical, energy, and industrial safety, focusing on defect-free product delivery.

+12814894292

Thogus

thogus.com
Avon Lake, OH

Based in Avon Lake, Ohio, Thogus is an established custom plastic injection molder and contract manufacturer founded in 1950. The company specializes in manufacturing plastic parts, guiding clients through material selection, part design, and tooling solutions. They offer insert molding, overmolding, and two-shot molding for medium-to-high volume production programs.

+18669338850

Thunderbird Molding

thunderbird-molding.com
Shelbyville, IN

Based in Shelbyville, IN, Thunderbird Molding specializes in high-precision custom plastic injection molding and contract manufacturing. They offer comprehensive services including mold design, prototyping, engineering, production, and assembly. The company focuses on realizing cost improvements and accelerating market entry for clients.

+15742943253

Universal Plastics

universalplastics.com
Holyoke, MA

Universal Plastics, based in Holyoke, MA, specializes in custom plastic molding, offering injection molding (gas assist, structural foam), thermoforming, and blow molding services. They serve medical, aerospace, transportation, and general industrial markets. The company provides in-house painting, secondary operations, and assembly, utilizing a range of tonnage presses for diverse project needs.

+14135924791

Venture Plastics, Inc.

ventureplastics.com
Newton Falls, OH

Based in Newton Falls, OH, Venture Plastics, Inc. provides injection molding solutions from two modern facilities in Ohio and Texas. They serve diverse markets including industrial/consumer, major appliance, automotive, and communications. Services extend to part design, program management, global tool sourcing, quality control, and value-added finishing and assembly.

+13308725774

Westec Plastics

westecplastics.com
Livermore, CA

Westec Plastics is an ISO 13485:2016 certified plastic injection molding organization located in Livermore, CA. They specialize in custom injection molding, mold building, 3D printed tooling, and clean room services. The company serves industries including medical, aerospace, consumer products, and electronics.

+19254543400

Beacon MedTech Solutions

beaconmedtech.com
—

Beacon MedTech Solutions manufactures precision plastic injection molding components. The company serves leaders in the Medical, Bio-Pharma, Aerospace, Defense, and Electronics industries, providing custom solutions for specialized applications.

No contact on file

California Plastics

california-plastics.com
—

California Plastics supplies a comprehensive range of engineering, specialty, and commodity thermoplastics, including additives and color concentrates. The company also offers custom plastic solutions, serving various industries with its diverse material portfolio and supporting specialized manufacturing requirements.

No contact on file

Country Plastics

countryplastics.net
Fresno, CA

Based in Fresno, CA, Country Plastics specializes in custom injection molding services. The company provides expertise in injection mold design, injection molding, and CNC machining. They also offer solutions for biodegradable molds, catering to various manufacturing needs.

No contact on file

Falcon Plastics

falconplastics.com
Madison, SD

Falcon Plastics specializes in mid-to-high volume plastic injection molding, delivering quality custom plastic parts. Serving industries such as medical, agricultural, and recreational, the company provides precision manufacturing solutions. They focus on producing components tailored to specific client specifications for various demanding applications.

No contact on file

New England Plastics Corp.

newenglandplastics.com
Methuen, MA

Based in Methuen, MA, New England Plastics Corp. provides custom plastic manufacturing and fabrication services. Established in 1946, the company focuses on producing custom plastic components and assemblies, leveraging extensive experience to meet a variety of client specifications and project requirements.

No contact on file

Plastic Molding Technology

plasticmolding.com
—

Plastic Molding Technology provides custom plastic molding services, specializing in complex plastic insert molding. The company utilizes custom automation cells, advanced robotics, vertical injection molding, and rotary table molding techniques to deliver its plastic solutions.

No contact on file

Precision Plastic Products Inc.

pppinc.org
—

Precision Plastic Products Inc. provides custom plastic injection molding, delivering precision molds and parts for critical sectors. Serving industries like medical, military, aerospace, and lighting, they specialize in tough-to-mold engineered materials such as PEEK and AMODEL. An in-house toolroom supports production with CNC machining and 3D design.

No contact on file

Reliant Plastics

reliantplastics.com
—

Reliant Plastics specializes in injection molded plastics, offering expertise in metal to plastic conversions. The company addresses client challenges throughout the entire plastics life cycle, providing comprehensive solutions for various custom molding requirements.

No contact on file

Structural Foam Molding

structuralfoammolding.net
—

Structural Foam Molding specializes in custom plastic molding, primarily utilizing low-pressure injection molding techniques. The company operates multiple production facilities across Ohio, Indiana, and Georgia, providing comprehensive manufacturing solutions for diverse client needs.

No contact on file

Welch Plastics

welchplastics.com
—

Welch Plastics operates as a plastic manufacturer, providing custom plastic fabrication solutions. The company specializes in manufacturing various plastic components, offering tailored solutions for diverse industrial applications. Their focus is on delivering high-quality production and fabrication processes for specific client requirements.

No contact on file

Get all 123 companies with 83 emails, 108 phone numbers, and 123 website links

One-time $19.99 — no subscription, includes CSV download.

Didn't find the right companies?

Describe your ideal customer and we'll find them.

5 free results, no card needed.

Need a bigger or more targeted list?

We build custom contact lists for any industry, location or job title. From $300 for 3,000 company contacts, or $600 with named decision-makers. Free sample of 25 first.

Request a custom list

How to Choose a Company

  • Verify their press tonnage aligns with your part's projected size and material requirements, and inquire about their capabilities for specialized processes like gas-assist molding, insert molding, or in-mold labeling if your design dictates.
  • Assess their engineering team's experience with Design for Manufacturability (DFM) and their ability to provide critical feedback on gate location, wall thickness uniformity, and potential for sink marks or warpage before tool build begins.
  • For highly regulated industries, insist on specific certifications such as ISO 13485 for medical devices or IATF 16949 for automotive components, and confirm their adherence to any necessary material traceability or lot control protocols.
  • Clarify upfront the terms of tooling ownership, who is responsible for mold maintenance, repair, and storage, and whether they have in-house tool making capabilities or rely solely on external mold builders.
  • Beware of suppliers who quote an exceptionally low piece price without thoroughly reviewing your 3D models or engaging in DFM discussions, as this often indicates a lack of understanding of your part's complexities or a hidden agenda for future change orders during the tool build phase.
  • Evaluate their specific experience with the engineering resins or commodity thermoplastics you're considering. A molder's proficiency with specialty materials like PEEK, Ultem, or highly filled compounds can drastically impact part quality and yield.

Frequently Asked Questions

Should I own my injection mold tooling, or should the molder?

This is a critical decision. Owning the tooling provides flexibility to move production to another molder if necessary, but you bear the upfront cost and responsibility for major repairs. If the molder owns it, the cost is often amortized into piece price, potentially locking you in but shifting maintenance burden. Always secure a detailed tooling quote, even if the molder owns it, to understand its true cost and value.

What is Design for Manufacturability (DFM) in custom plastic molding, and why is it important?

DFM in custom plastic molding is the process of optimizing a part's design to make it easier, more cost-effective, and more reliable to manufacture via injection molding. It involves critical considerations like wall thickness, draft angles, rib placement, and gate location to prevent defects, reduce cycle times, and minimize tooling costs. Engaging in DFM early with your molder prevents costly redesigns and tool modifications down the line.

What are common challenges when switching custom plastic molding suppliers, and how can they be mitigated?

Switching suppliers can be complex, especially if the original tooling is involved. Challenges include qualifying existing tooling on a new press, matching color and finish specifications, and ensuring consistent part quality. Mitigate these by thoroughly documenting the current process, conducting a First Article Inspection (FAI) with the new molder, and considering a 'soft launch' or parallel production if feasible. A robust mold transfer protocol is essential.

How do I ensure material quality and traceability for my molded parts?

Insist on material Certificates of Conformance (CoCs) for every lot of resin used, verifying it meets your specified grade and properties. For critical applications, discuss lot traceability and resin batch retention policies with your molder. This ensures that in the event of a quality issue, the material source can be pinpointed and isolated.

Related Directories