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O Ring Manufacturers

Last updated: January 2026

This directory lists 90 o ring manufacturers across the United States, from custom elastomer compounders specializing in extreme environments to high-volume precision molders focusing on cost-effective, consistent production.

Buyers frequently seek solutions for persistent sealing failures, needing materials with superior chemical compatibility, wider temperature ranges, or improved dynamic performance. The challenges often involve minimizing compression set, controlling flash on complex geometries, and ensuring consistent durometer across batches for mission-critical applications that demand long-term reliability.

Suppliers in this space range from those dedicated to standard AS568 sizes in common materials like NBR and EPDM, to highly specialized manufacturers capable of producing custom-molded parts from advanced fluoropolymers or perfluoroelastomers, often providing services like Finite Element Analysis (FEA) for optimal seal design.

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Company Directory

90 companies nationwide

Advanced Aircraft Seal

Riverside, CA

Based in Riverside, CA, Advanced Aircraft Seal manufactures custom elastomeric seals and gaskets for the aerospace industry, serving clients like Boeing and the Department of Defense. They utilize in-house blending for materials such as Silicone, Fluorsilicone, Neoprenes, and Buna. The company is AS9100D and ISO 9001:2015 certified.

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ACE Rubber Products, Inc.

Kennedale, TX

Based in Kennedale, TX, ACE Rubber Products, Inc. is a custom manufacturer of rubber molded parts, specializing in rubber-to-metal bonding. The company offers a range of rubber molded products, including non-standard O-Rings, vacuum cups, and custom gaskets, meeting MIL-I-45208 quality standards. With over 30 years in business, they produce stock and custom rubber products.

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Aero Rubber Company®, Inc.

Tinley Park, IL

Based in Tinley Park, IL, Aero Rubber Company®, Inc. is an ISO 9001:2015 certified manufacturer of B2B custom rubber parts. They specialize in high-volume production, offering consultative engineering to develop components to exact specifications. The company also supplies industrial and promotional rubber bands.

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American Rubber Corp

Chesterfield, IN

American Rubber Corp manufactures custom and standard rubber o-rings, seals, and gaskets. Based in Chesterfield, IN, the company provides sealing solutions for automotive, aerospace, marine, and pharmaceutical industries. They specialize in rubber extrusions, molded parts, and PTFE components, handling processes from design to production.

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Ames Rubber Manufacturing

Los Angeles, CA

Based in Los Angeles, CA, Ames Rubber Manufacturing offers over 70 years of experience in custom rubber product fabrication. They specialize in molded, extruded, die-cut, and lathe-cut rubber gaskets, seals, and various components. The company provides a one-stop solution for elastomeric requirements, assisting engineers with design, geometry, and material selection for diverse applications.

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ASNA Global

Fremont, CA

Based in Fremont, CA, ASNA Global manufactures high-performance FFKM O-rings and seals. The company specializes in advanced materials and offers comprehensive R&D services, providing critical sealing solutions for various industrial applications.

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American Seal & Packing

Santa Ana, CA

Based in Santa Ana, CA, American Seal & Packing manufactures and distributes a wide variety of O-rings. They specialize in custom O-ring manufacturing, molding, and vulcanizing for diverse applications. The company offers standard, metric, and custom sizes across various elastomers, PTFE, and specialty materials.

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Austin Seal Company

Austin, TX

Austin Seal Company, based in Austin, TX, specializes in manufacturing O-rings, Teflon seals, custom molded shapes, and gaskets from various elastomeric materials. They provide solutions for critical applications across industries including semiconductor, pharmaceutical, oil and gas, and aerospace.

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Bay Seal Company

Hayward, CA

Based in Hayward, CA, Bay Seal Company specializes in providing a quality line of sealing products. The company offers Kalrez O-rings, spliced O-rings, and custom molded shapes, along with engineering support and design guides. They also operate an office in Austin, TX, and serve industrial customers.

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Beacon Gasket & Seals Co.

Lakewood, OH

Beacon Gasket & Seals Co. specializes in providing a comprehensive range of sealing solutions from their Lakewood, Ohio facility. Their product offerings include non-metallic and metal gaskets, high-temperature products, expansion joints, and hydraulic and pneumatic packings, serving diverse industrial sealing needs.

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Caliber Sealing Solutions Inc.

Corona, CA

Based in Corona, CA, Caliber Sealing Solutions Inc. manufactures precision custom and standard design gaskets, o-rings, and high-pressure hoses. Specializing in industrial sealing solutions, the company offers high-performance capacity and expertise. ISO 9001:2015 certified, they have provided quality services since 1983.

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Captain O-Ring LLC

Gloucester City, NJ

Based in Gloucester City, NJ, Captain O-Ring LLC is an ISO9001:2015 certified manufacturer of stock and custom o-rings. They offer various materials, colors, and custom runs with no mold fees. The company also produces custom rubber and plastic parts, alongside comprehensive o-ring kit assembly services.

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Precision Associates, Inc.

Minneapolis, MN

Based in Minneapolis, MN, Precision Associates, Inc. (PAI) specializes in manufacturing standard and custom precision molded O-Ring seals. They produce a wide range of O-rings, including HNBR, Viton, AFLAS®, and FDA & Medical grade, catering to various industrial needs.

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Clark Seals

Tulsa, OK

Based in Tulsa, OK, Clark Seals is a specialized engineering firm and precision manufacturer of elastomeric seals, founded in 1956. They provide custom seal design, application engineering, and problem seal analysis for original equipment manufacturers and the oil and gas industry.

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Coi Rubber Products, Inc.

Diamond Bar, CA

Based in Diamond Bar, CA, Coi Rubber Products, Inc. is a rubber molding manufacturer specializing in custom rubber and plastic products. They utilize techniques such as compression molding, extrusion, and rubber-to-metal bonding. Serving diverse sectors including automotive, industrial, food processing, HVAC, and appliance, Coi Rubber offers custom solutions for various client needs.

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CT Gasket & Polymer Co.

Houston, TX

Based in Houston, TX, CT Gasket & Polymer Co. specializes in custom gaskets and polymer product manufacturing. With over 100 years of engineering expertise, the company provides high-quality sealing solutions for industrial applications. Their capabilities include custom O-rings and other precision seals for B2B clients.

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Custom Gasket Manufacturing LLC

Englewood Cliffs, NJ

Custom Gasket Manufacturing LLC specializes in custom gaskets, seals, and molded rubber products. Based in Englewood Cliffs, NJ, the company offers extensive rubber molding capabilities, including compression, transfer, and injection molding. They also provide rubber extruding, die cutting, waterjet, laser, and flash cutting for high-performance sealing solutions.

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Custom Rubber Corporation

Cleveland, OH

Based in Cleveland, OH, Custom Rubber Corporation specializes in the design and molding of custom rubber products. They provide high-quality molded rubber components using both injection and compression molding processes. Committed to customer experience, all products are proudly made in the USA for various industrial applications.

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Da/Pro Rubber

Based in Newburyport, MA, Da/Pro Rubber is a custom molded rubber and plastic manufacturer. The company specializes in precision molding a wide range of custom parts. Serving demanding applications across industries like healthcare and aerospace, they possess the expertise and facilities to produce high-quality molded components, including various types of O-rings.

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East Texas Seals, LLC

Van, TX

Based in Van, TX, East Texas Seals, LLC provides a comprehensive selection of o-rings and seals, offering custom molded solutions tailored for diverse sealing applications. The company utilizes high-quality compounded elastomers to create specialized products and also provides kitting and inventory management services.

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Elastostar Rubber Corporation

Plain City, OH

Based in Plain City, OH, Elastostar Rubber Corporation manufactures custom extruded and precision-molded silicone rubber seals and gaskets. The company serves industrial sectors including aerospace, medical, and automotive, and holds ISO 9001:2015, AS9100D, and IATF 16949 certifications.

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EMI Conductive Rubber LLC

Brea, CA

Based in Brea, CA, EMI Conductive Rubber LLC is a QPL approved manufacturer of advanced EMI shielding materials. They specialize in custom molded O-Rings, conductive elastomers, gaskets, and seals for aerospace, electronics, and medical industries. Products are proudly Made in America.

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Engineered Seal Products

Cedar Rapids, IA

Based in Cedar Rapids, IA, Engineered Seal Products manufactures high-temperature O-rings and custom sealing solutions. The company offers engineering expertise from design to delivery, serving global OEM markets for over 50 years. They provide leak-free products to industries including Oil & Gas, Aerospace, and Hydraulics.

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Exactseal Inc

Indianapolis, IN

Based in Indianapolis, IN, Exactseal Inc. manufactures precision-engineered extruded and molded rubber products. The company specializes in O-ring production, including hollow, solid, and X-rings. Exactseal also provides custom rubber extrusions, profiles, gaskets, and seals for various industrial applications, all proudly made in the USA.

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Fort Worth Gasket & Supply

Fort Worth, TX

Based in Fort Worth, TX, Fort Worth Gasket & Supply provides industrial and military-specification gaskets, fluid sealing seals, and O-rings. They also offer extruded and molded rubber parts, serving government entities, prime contractors, and OEMs across various commercial industries since 1918.

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Gallagher Fluid Seals, Inc.

Based in King of Prussia, PA, Gallagher Fluid Seals, Inc. manufactures and distributes fluid sealing products. They specialize in custom molded rubber and plastic parts, utilizing methods like compression, transfer, and injection molding. The company produces custom O-rings and other sealing components for various industrial applications.

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Gasket Engineering

Kansas City, MO

Based in Kansas City, MO, Gasket Engineering is a family-owned custom gasket manufacturer with over 60 years of experience. They convert various raw materials into precise shapes and dimensions using advanced die-cutting, dieless cutting, rotary die cutting, and laser cutting technologies. The ISO 9001:2015 certified company serves diverse industries including aerospace and medical.

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Gasket Manufacturing Engineering

Santa Fe Springs, CA

Based in Santa Fe Springs, CA, Gasket Manufacturing Engineering specializes in fabricating custom gaskets and seals. The company offers precision manufacturing services to produce various sealing products, including O-rings, from diverse materials. They serve industrial and commercial clients with engineered solutions for their specific application requirements.

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Gasket Specialties Powered by TIPCO Technologies

Rancho Cucamonga, CA

Based in Rancho Cucamonga, CA, Gasket Specialties Powered by TIPCO Technologies manufactures and distributes industrial gaskets and related products since 1925. They provide flash, laser, waterjet, die, and lathe cutting services, serving OEM and MRO clients. The company is ISO 9001:2015 and AS9100 certified.

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Gorilla Gasket

Artesia, NM

Based in Artesia, NM, Gorilla Gasket specializes in manufacturing high-quality custom industrial gaskets and seals. The company offers a wide range of advanced gasket materials to meet diverse industrial application needs. They provide custom fabrication services for reliable sealing solutions.

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Hi-Tech Seals

Google Reviews Broussard, LA

Hi-Tech Seals manufactures and distributes industrial seals, gaskets, and components, explicitly offering spliced and vulcanized O-rings. The company provides diverse solutions across sectors like energy, fluid power, agriculture, mining, automotive, and general industrial manufacturing, emphasizing high-quality custom molded products and rubber extrusions.

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Houston Manufacturing Specialty Co., Inc.

Houston, TX

Based in Houston, TX, Houston Manufacturing Specialty Co. Inc. manufactures a range of gaskets and gasket materials, including rubber gaskets. Established in 1974, they specialize in rubber molding, custom die-cut, punch press, and waterjet cutting processes. Their product offerings include rubber gaskets, packing, insulation kits, and PTFE shims for industrial applications.

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KEF America

Foothill Ranch, CA

Based in Foothill Ranch, CA, KEF America specializes in manufacturing micro miniature O-rings, including the world's smallest, for demanding applications. The company also produces custom rubber products like chemical-resistant seals and diaphragms. KEF America serves industrial clients across medical, aerospace, automotive, and electronics industries.

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M-Cor Inc.

M-Cor Inc. manufactures Teflon® encapsulated o-rings, CamLock encapsulated gaskets, and high-performance sealing solutions in the USA. Since 1987, the company has engineered high-quality products, leveraging advanced AI and material science. M-Cor offers a comprehensive range of sealing solutions for critical systems.

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McDowell & Company

Richardson, TX

McDowell & Company, based in Richardson, TX, manufactures and distributes high-precision parts, specializing in medical-grade o-rings, seals, and gaskets. With over 50 years of experience, they produce components to customer specifications. They also offer CNC machining for aerospace and semiconductor industries.

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Mega Precision O-Rings

Torrance, CA

Based in Torrance, CA, Mega Precision O-Rings manufactures custom O-rings and engineered plastic parts. With over 42 years of experience, this family-owned USA company utilizes high-tech machines to produce precision components. They serve aerospace, agriculture, and leisure industries, emphasizing quick shipping and customer satisfaction for various static and dynamic applications.

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Midwest Gasket Corp.

Milroy, IN

Based in Milroy, IN, Midwest Gasket Corp. specializes in manufacturing custom gaskets, molded parts, and O-rings. They offer O-rings in most elastomers, supplying components to automotive, commercial, industrial, and military sectors. The company prioritizes quality through thorough material and tooling inspections.

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Newman Sanitary Gasket Company

Lebanon, OH

Based in Lebanon, OH, Newman Sanitary Gasket Company manufactures O-rings, gaskets, diaphragms, and custom seals. The company specializes in high purity products, meeting FDA, USP Class VI, and ISO 9001 standards. Serving food, dairy, and pharmaceutical industries, they offer custom molding and extrusion solutions.

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Odin Heavy Industries

Bryan, TX

Based in Bryan, TX, Odin Heavy Industries specializes in advanced O-ring manufacturing and precision-engineered sealing solutions. They offer full-spectrum O-ring production, from prototype to high-volume, tailored to client specifications for demanding environments. Industries served include valves, pumps, compressors, wellhead, and hydraulic systems.

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O-Rings West, Inc.

Lynnwood, WA

Based in Lynnwood, WA, O-Rings West, Inc. manufactures and supplies standard and custom O-rings and molded rubber products. Established in 1996, they stock over 50 million O-rings, offering custom sizing, materials, and quick turnaround. They serve B2B industries like Aerospace, Military, and Medical.

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Precision Fluorocarbon Inc.

Houston, TX

Based in Houston, TX, Precision Fluorocarbon Inc. manufactures specialty plastic O-rings and custom rubber seals of various types and sizes. The company provides custom-fabricated plastic parts and gaskets, utilizing capabilities such as plastic machining and injection molding for high-performance components.

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RD Rubber Technology Corporation

Santa Fe Springs, CA

RD Rubber Technology Corporation, based in Santa Fe Springs, CA, specializes in precision custom rubber molding. They offer compression, transfer, and injection molding, alongside cleanroom molding and bonding services. The company develops and prototypes various rubber components for aerospace, defense, and medical device industries.

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Reliable Gaskets USA

Paramount, CA

Based in Paramount, California, Reliable Gaskets USA is a manufacturer and supplier of high-quality O-rings, gaskets, and seals. The company offers custom fabrication services, including die cutting, waterjet cutting, CNC machining, molding, and extrusion, serving diverse industrial applications nationwide with precision sealing solutions.

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Robinson Rubber Products Company, Inc.

Minneapolis, MN

Based in Minneapolis, MN, Robinson Rubber Products Company, Inc. is an ISO 9001:2015 certified custom molding manufacturer of elastomeric and thermoplastic components and assemblies. They specialize in custom rubber products, offering design assistance, material formulation, and value-added services like assembly and packaging for diverse industries.

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Royal Seals Company

Royal Seals Company manufactures and supplies precision-spliced vulcanized O-rings, extrusions, and custom molded rubber and plastic components. They offer solutions from prototype through mass production, providing fast turnaround for various quantity needs. The company also handles custom fabricated items and assemblies.

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The Rubber Group

Rochester, NH

The Rubber Group is a US-based manufacturer specializing in high-performance rubber solutions for mission-critical applications. With deep expertise in rubber chemistry and precision molding, they engineer custom compounds and tight-tolerance components. They serve demanding industries including aerospace, electrical T&D, and fluid/process control systems.

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Rubber Fab

Andover, NJ

Based in Andover, NJ, Rubber Fab manufactures O-rings and cord, available in various sizes and elastomers. Their O-rings are FDA compliant for food applications and Class VI tested for pharmaceutical use. The company also provides sanitary gaskets and hose assemblies.

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SantopSeal

Based in Pittsburgh, PA, SantopSeal manufactures custom extruded rubber products. They specialize in EPDM rubber seals, gaskets, O-rings, cords, tubing, and other seals. SantopSeal provides FDA grade seals for food processing operations and supplies Santoprene™ TPV rubber sheets.

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Satori Seal Corporation

Rancho Cucamonga, CA

Based in Rancho Cucamonga, CA, Satori Seal Corporation specializes in manufacturing high-quality O-rings, custom molded seals, and gaskets. They produce a variety of rubber compounds, including Fluorocarbon and NSF/WRAS certified materials. The company serves industrial clients, including the pool and shipping industries, with a focus on consistent quality and on-time delivery.

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Sealing Devices

Depew, NY

Based in Depew, NY, Sealing Devices is a manufacturer and distributor of seals, gaskets, and custom molded rubber parts. The company offers an extensive range of O-rings, including EMI shielding O-rings, and serves industrial, aerospace, military, and fluid power industries. They are ISO9001:2015 and AS9100D certified.

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Seal Innovations, Inc.

Huntington Beach, CA

Based in Huntington Beach, CA, Seal Innovations, Inc. provides custom molded rubber parts, rubber extrusions, and rubber sheeting. They offer comprehensive rubber molding services, including engineering and design support, along with rapid prototyping. The company focuses on durable, high-performance rubber products for diverse business applications.

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Seal-Jet of Ohio, Inc.

Cincinnati, OH

Based in Cincinnati, Ohio, Seal-Jet of Ohio, Inc. manufactures high-quality hydraulic and pneumatic seals. With over 20 years of experience in fluid sealing technology, they produce specialty rubber and plastic components. They stock various materials including Urethane, Nitrile, Viton, EPDM, Silicone, plastics, and PTFE, meeting diverse industrial sealing needs.

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Seal and Rubber Technologies Inc

Yorba Linda, CA

Based in Yorba Linda, CA, Seal and Rubber Technologies Inc. manufactures high-quality O-rings and custom molded rubber seals. They maintain an inventory of over 70 million O-rings for immediate shipment and serve industries including automotive, medical products, hydraulic fittings, and semi-conductors.

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APG

Houston, TX

Based in Houston, TX, APG manufactures and distributes quality o-rings tailored for industrial applications. They produce o-rings compliant with international standards such as AS 568A, DIN ISO 3601, and JIS Standard, providing reliable sealing solutions for various industries.

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SSP Seals

Hackettstown, NJ

Based in Hackettstown, NJ, SSP Seals specializes in manufacturing standard and custom industrial seals, parts, and gaskets for OEMs. They provide O-rings using FDA-approved materials such as Buna, PTFE, Viton, EPDM, and Silicone. The company offers machined prototypes and production quantities with efficient lead times.

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Stockwell Elastomerics

Based in Philadelphia, PA, Stockwell Elastomerics specializes in custom silicone o-ring and gasket manufacturing. Utilizing liquid silicone injection molding, they produce high-performance seals for demanding technology equipment. The company provides engineering support, guiding material selection and developing custom composite elastomers to meet specific application needs.

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Timco Rubber

Berea, OH

Based in Berea, OH, Timco Rubber specializes in custom molded and extruded rubber parts, including seals and gaskets. They serve industrial clients in markets such as HVAC and Tier 2 automotive, providing high-performance rubber solutions since 1956.

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US Rubber & Gasket

Conroe, TX

Based in Conroe, TX, US Rubber & Gasket specializes in manufacturing and distributing custom and standard gaskets. They offer various materials like Neoprene, EPDM, Silicone, and Viton for diverse sealing needs. The company provides wholesale business-to-business solutions for industrial clients.

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Valley Seal Company

Woodland Hills, CA

Based in Woodland Hills, CA, Valley Seal Company manufactures and distributes a wide range of high-quality sealing solutions. They specialize in custom rubber molding, producing O-rings, gaskets, and hydraulic seals using various materials and state-of-the-art processes. They serve diverse industrial applications.

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Vanguard Products Corporation

Danbury, CT

Based in Danbury, CT, Vanguard Products Corporation is a full-service manufacturer of high-precision elastomeric goods. They specialize in producing high-quality custom rubber and silicone O-rings, utilizing advanced compression, transfer, and liquid injection molding capabilities. The company also offers seals, gaskets, and various custom extrusions.

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WARCO

Orange, CA

Based in Orange, CA, WARCO manufactures quality molded rubber products, including O-rings, seals, and gaskets. With over 115 years of experience, the company directly serves American industries and the military, providing essential rubber components using their proven molding processes.

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Wolar

Houston, TX

Based in Houston, TX, Wolar is a minority-owned manufacturer of ring gaskets and spiral wound gaskets, founded in 1992. The company provides a comprehensive range of USA manufactured and strategically-sourced gaskets for industries including oil and gas, mining, power generation, and chemical refining.

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Datwyler Sealing

Pomona, CA

Based in Pomona, CA, Datwyler Sealing manufactures high-performance O-rings, including those under its Parco brand. They specialize in critical applications for military and aerospace sectors, offering a range of advanced material solutions. The company operates manufacturing facilities in the United States, serving industrial B2B customers.

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DuPont

DuPont manufactures high-performance elastomer seals and gaskets, including O-rings, engineered to withstand extreme heat and corrosive chemicals. These durable products serve critical applications across the automotive, chemical processing, and aerospace industries, ensuring reliability in demanding environments.

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Precision Polymer Engineering

Brenham, TX

Based in Brenham, TX, Precision Polymer Engineering designs, develops, and manufactures high-performance molded rubber seals, including O-rings, rubber gaskets, and custom elastomer components. They provide engineered solutions for critical industrial applications worldwide.

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Aero Engineering & Manufacturing

Valencia, CA

Based in Valencia, CA, Aero Engineering & Manufacturing has supported the aerospace and defense industry since 1948. They provide OEM production and aftermarket MRO support, specializing in parts manufacturing. Solutions range from simple components to complex assemblies for legacy and current generation aircraft platforms, ensuring critical spares requirements.

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Apple Rubber

Lancaster, NY

Apple Rubber, based in Lancaster, NY, is an ISO 9001 certified designer and manufacturer of standard AS568 and ISO 3601 O-rings, rubber seals, and custom molded shapes. The company offers sealing solutions for diverse industries, including aerospace and medical, and maintains a large inventory.

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Blaylock Gasket & Packing

Fort Worth, TX

Based in Fort Worth, TX, Blaylock Gasket & Packing is a family-owned business with over 40 years of experience. They specialize in manufacturing ISO 9001 certified custom gaskets. Serving demanding sectors like oil, gas, and pharmaceuticals, they provide top-quality products fabricated to exact customer specifications.

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California Gasket and Rubber Corporation

Orange, CA

Based in Orange, CA, California Gasket and Rubber Corporation is a custom manufacturer of industrial sealing devices. They specialize in a wide range of products including gaskets, rubber, metal, and hose division components. The company manufactures various parts, from tiny to very large, serving diverse industrial needs.

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Conquest Seal

Orange, CA

Based in Orange, CA, Conquest Seal manufactures high-quality O-rings, seals, gaskets, and custom molded rubber components. They provide comprehensive sealing solutions in various materials like Viton and EPDM. Serving diverse industrial sectors including aerospace, automotive, and medical, they manage projects from design through production.

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Dayton Seals and Packing

Dayton, OH

Based in Dayton, OH, Dayton Seals and Packing manufactures and distributes high-performance hydraulic and pneumatic seals and components. They offer a vast selection of products including O-rings, seals, gaskets, and packing designed for unique requirements. Serving leading OEMs, their services encompass custom engineering, reverse engineering, and seal kit production.

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Eutsler Technical Products, Inc.

Houston, TX

Based in Houston, TX, Eutsler Technical Products, Inc. specializes in manufacturing custom precision rubber products, including O-rings, gaskets, and seals, for industrial OEMs worldwide. They utilize a wide range of elastomers like fluorocarbon, nitrile, and EPDM, offering compounding and fabrication expertise. Eutsler is ISO 9001:2015 certified.

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Global Elastomeric Products, Inc.

Bakersfield, CA

Based in Bakersfield, CA, Global Elastomeric Products, Inc. manufactures quality rubber molding products. With over fifty years of experience, the company serves the oil and agricultural industries, offering in-house design, engineering, and quick production times for various rubber components.

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Hennig Gasket & Seals

Chicago, IL

Hennig Gasket & Seals is a Chicago-based manufacturer specializing in custom gaskets and seals. The company produces a wide array of configurations from various materials, including EPDM, Nitrile, Silicone, Viton, and other rubber compounds, catering to diverse industrial applications.

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Lamons

Houston, TX

Based in Houston, TX, Lamons is a manufacturer and distributor specializing in custom gaskets, fasteners, and safety sealing solutions. They provide high-volume, automated, and custom-engineered products for diverse industrial applications, including standard components and one-of-a-kind solutions with rapid response times.

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Marco Rubber & Plastics

Seabrook, NH

Based in Seabrook, NH, Marco Rubber & Plastics is a global provider of custom o-rings and seals. The company offers world-class manufacturing services including custom molding, machining, extrusion, and splicing, meeting exact specifications for various sealing applications.

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Minor Rubber Company

Bloomfield, NJ

Based in Bloomfield, NJ, Minor Rubber Company manufactures high-performance molded and extruded rubber parts. They produce precision-engineered components for industrial use, trusted by OEMs for sealing, protection, and stability. Their markets include aerospace, agriculture, chemical, and transportation.

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Ohio Valley Gasket, Inc.

West Chester, OH

Based in West Chester, OH, Ohio Valley Gasket, Inc. was founded in 1988 by experienced professionals in gasket manufacturing. The company specializes in providing custom gaskets, packing, and seals, including O-Rings, to diverse industries. They offer precision-engineered solutions with a focus on quality craftsmanship.

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Pride Seals, Inc.

Cincinnati, OH

Based in Cincinnati, OH, Pride Seals, Inc. specializes in manufacturing high-quality sealing products. As "Sealing Specialists," the company emphasizes efficiency, quality, and safety. They provide value-added services and are known for reliability, continually innovating to meet diverse industrial sealing requirements.

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Performance Sealing Inc.

Irvine, CA

Based in Irvine, CA, Performance Sealing Inc. specializes in designing and manufacturing custom elastomeric and high-pressure polymer sealing solutions. They engineer advanced polymer seals, bearings, and related components for demanding applications across diverse markets, providing high-performance sealing system solutions to give customers a competitive edge.

Phone available

Qualiform Rubber Molding

Mogadore, OH

Qualiform Rubber Molding is an American manufacturer of custom rubber molded products. Based in Mogadore, OH, the company specializes in producing precision rubber components including O-rings, seals, gaskets, and diaphragms. They offer various molding processes, supporting projects from prototypes to high-volume production.

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Real Seal Co

Escondido, CA

Based in Escondido, CA, Real Seal Co manufactures and distributes seal products and mechanical components, including O-rings. Specializing in performance rubber and plastic materials, they offer material formulation services with an equipped laboratory and technical staff. The company serves diverse industries nationally and internationally.

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Seal and Design

Rochester, NY

Seal and Design specializes in manufacturing O-rings for various static and dynamic applications. They design and produce O-rings in standard (imperial) and metric sizes, offering diverse material options to meet specific client requirements. The company focuses on providing tailored solutions for industrial needs.

Phone available

Sur-Seal

Sur-Seal provides custom manufacturing for engineered components and materials, including rubber seal gaskets and custom seal solutions. They produce precise die-cut, molded, formed, and extruded products for industrial applications. With AS9100 and ISO9001 certifications, Sur-Seal delivers high-quality, custom sealing solutions across the United States.

Phone available

The O-Ring Store LLC

The O-Ring Store LLC is a U.S.-based OEM O-Rings supplier providing fast, accurate sealing solutions for manufacturers and OEMs. They offer millions of standard, metric, and custom vulcanized O-Rings, engineered compounds, oil, and hydraulic seals. An ISO 9001:2015 certified company, they assist with material selection and custom solutions.

Phone available

Utex Industries Inc.

Houston, TX

Utex Industries Inc. specializes in manufacturing engineered fluid control solutions and custom fluid sealing products. The company provides specialty seal manufacturing and pump packing, offering performance solutions for critical systems across diverse sectors including energy, mining, water, marine, and general industry.

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West Coast Gasket

Brea, CA

Based in Brea, California, West Coast Gasket manufactures custom gaskets, O-rings, seals, and other fluid sealing products. The company specializes in fabricating die-cut components and rubber extrusions for diverse industrial applications. They are an ISO 9001:2015 certified, made in the USA provider.

Phone available

World Sealing Corporation

Odessa, TX

World Sealing Corporation, based in Odessa, TX, specializes in providing high-quality gaskets and mechanical seals for various industrial applications. They offer an extensive product range and custom sealing solutions for industries including oil and gas, manufacturing, and HVAC.

Phone available

Wyatt Seal

Charlotte, NC

Wyatt Seal, a US manufacturer headquartered in Charlotte, NC, specializes in producing custom O-rings and various high-performance seals, including D-rings, boots, and bellows. The company leverages in-house manufacturing capabilities to deliver robust sealing solutions for diverse industrial applications. They also distribute quality sealing products with prompt delivery.

Phone available

SKF

SKF specializes in manufacturing a wide array of sealing solutions, including O-rings, for diverse industrial applications. The company develops and supplies advanced seals tailored for rotating and reciprocating machinery, leveraging its comprehensive engineering and production capabilities.

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How to Choose a Company

  • Evaluate their in-house material science capabilities; a supplier merely reselling stock elastomers without compounding expertise often struggles with custom formulations or root cause analysis of material failures.
  • For aerospace, medical, or automotive applications, verify specific certifications like AS9100, ISO 13485, or IATF 16949, and inquire about their lot traceability from raw material to finished o ring.
  • Assess their quality control beyond basic dimensional checks; look for facilities with equipment to test compression set, tensile strength, and durometer, especially with documented Statistical Process Control (SPC) for critical sealing parameters.
  • Discuss their approach to tooling ownership and maintenance; a common gotcha is not clarifying who covers tooling refresh or repair, which can lead to unexpected costs or production delays, particularly for custom geometries.
  • Inquire about their flash removal and surface finish capabilities, particularly for dynamic seals or cleanroom applications where particulate generation from excessive flash would be detrimental to performance.
  • Verify their experience with your specific material requirements; if you need FKM for aggressive chemical environments or USP Class VI compliant silicone for medical devices, ensure they have a robust, proven process for managing its processing and post-cure.

Frequently Asked Questions

How critical is compression set for long-term o ring reliability?

It's paramount. Compression set is the permanent deformation of an elastomer after prolonged compression, especially at elevated temperatures. A high compression set means the o ring loses its elastic memory and ability to rebound, leading to a loss of sealing force and premature failure. For both static and dynamic seals, it's a primary indicator of longevity, so always specify a maximum allowable compression set based on your application's expected lifespan and temperature profile.

What technical data should I prioritize when evaluating an o ring material for chemical compatibility?

Beyond generic material compatibility charts, request specific immersion test data for your target fluid, temperature, and concentration. Pay close attention to changes in volume, hardness (durometer), and tensile strength after immersion. Understand that broad class compatibility (e.g., 'good with oils') differs significantly from precise chemical resistance for a specific formulation and operational condition.

When is a custom elastomer compound necessary, rather than an off-the-shelf material?

Custom compounds are vital when off-the-shelf materials don't meet a confluence of specific performance criteria like extreme temperature resistance (e.g., ultra-low or very high), unique chemical compatibility, extremely low outgassing requirements, or precise mechanical properties (e.g., very low durometer for delicate applications). They often involve proprietary blending of base polymers, curing agents, and fillers to achieve a precise, tailored property profile.

What advanced quality control methods should I look for in an o ring manufacturer?

Beyond standard visual and dimensional inspection, look for suppliers employing techniques like optical sorters for automated flash and dimensional consistency, in-house tensile and compression set testing equipment, durometer testing, and FTIR (Fourier-transform infrared spectroscopy) for material verification. A strong manufacturer will also have documented Statistical Process Control (SPC) for critical features like OD, ID, and cross-section.

How does mold tooling impact the cost and quality of custom o rings?

Mold tooling is a significant upfront investment, directly influencing part quality, cycle time, and ultimately unit cost. Higher quality tooling with more cavitation (parts per cycle) reduces per-part cost in high volumes but costs more initially. The tooling design also dictates flash control, parting line location, gate vestige, and overall dimensional accuracy. Discussing tooling material, expected lifespan, and who owns the tooling is crucial for long-term project planning.

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