R&R Rubber Molding Inc.
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Our Products

O-Rings & Precision Seals

We manufacture custom O-rings, quad-rings (X-rings), and other elastomeric seals in any size – from just a few millimeters in diameter up to large flange seals – to meet your requirements.

Our O-rings are molded with precision flash control to ensure a perfect fit and seal. We can produce both standard AS568 sizes and completely custom dimensions, in round or square cross-sections.

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Custom-Molded O-Rings & Precision Elastomer Seals Features & Capabilities

Available in a wide range of polymers, including:
  • Buna-N (Nitrile): Ideal for general-purpose oil resistance
  • Viton® / FKM: Suited for high-temperature and chemical exposure
  • Silicone: Excellent for extreme temperatures and FDA-compliant uses
  • EPDM: Great for water, steam, and outdoor environments
  • HNBR & Aflas®: Excellent for oil & gas and sour gas service
  • FFKM & Exotics: Maximum chemical and thermal resistance for aerospace and defense
Performance Specs & Precision Quality:
  • Custom durometer options 30–90 Shore A, tailored to application needs
  • Low-compression set compounds for critical static sealing
  • Optional backup rings (PTFE or rubber) for high-pressure extrusion resistance
  • Large-format O-rings molded or spliced up to 36”+ diameters
  • Cryogenic deflashing & precision trimming for flash-free sealing surfaces
  • Full documentation and traceability with AS9100D, ISO 9001, ITAR, PPAP, FDA, NSF/ANSI, RoHS, REACH, UL compliance

Custom-Molded O-Rings & Precision Elastomer Seals Features & Capabilities

Available in a wide range of polymers, including:
Performance Specs & Precision Quality:
  • Buna-N (Nitrile): Ideal for general-purpose oil resistance
  • Viton® / FKM: Suited for high-temperature and chemical exposure
  • Silicone: Excellent for extreme temperatures and FDA-compliant uses
  • EPDM: Great for water, steam, and outdoor environments
  • HNBR & Aflas®: Excellent for oil & gas and sour gas service
  • FFKM & Exotics: Maximum chemical and thermal resistance for aerospace and defense
  • Custom durometer options 30–90 Shore A, tailored to application needs
  • Low-compression set compounds for critical static sealing
  • Optional backup rings (PTFE or rubber) for high-pressure extrusion resistance
  • Large-format O-rings molded or spliced up to 36”+ diameters
  • Cryogenic deflashing & precision trimming for flash-free sealing surfaces
  • Full documentation and traceability with AS9100D, ISO 9001, ITAR, PPAP, FDA, NSF/ANSI, RoHS, REACH, UL compliance
Why Choose R&R Rubber

Why R&R Rubber Is the Trusted Choice for Precision O-Rings & Seals

Our O-rings are molded under strict AS9100D and ISO 9001:2015 quality systems, with precision flash control, cryogenic deflashing, and post-cure options when required. This ensures every seal is flash-free, dimensionally accurate, and leak-tight — delivering consistent performance in static and dynamic applications. Materials are available from 30–90 Shore A and tested to MIL-STD, ASTM, and customer-specific specs.

Whether you need a small run of prototype seals or millions of production parts, R&R offers scalable molding capacity through in-house presses and our global manufacturing network. We provide rapid prototyping, First Article Inspections (AS9102), and PPAP documentation to accelerate approvals, and we maintain inventory programs for high-usage O-rings.

Our flexible model means you get what you need, when you need it — without compromising compliance. From spliced large-diameter rings to micro precision seals, we support both urgent replacement needs and long-term supply agreements.

From compound selection to performance testing, we provide hands-on support for mission-critical sealing. Our lab partners and in-house capabilities include tensile strength, compression set, hardness, and extrusion resistance testing, helping validate performance before deployment.

We are ITAR-registered and DFARS/CMMC compliant, ensuring secure handling of defense-related data. For food and water systems, we supply FDA 21 CFR, NSF/ANSI 61, and UL-rated materials. For aerospace and oil & gas, we offer AMS, BMS, API, and NORSOK M-710 qualified compounds.

Our O-rings are molded under strict AS9100D and ISO 9001:2015 quality systems, with precision flash control, cryogenic deflashing, and post-cure options when required. This ensures every seal is flash-free, dimensionally accurate, and leak-tight — delivering consistent performance in static and dynamic applications. Materials are available from 30–90 Shore A and tested to MIL-STD, ASTM, and customer-specific specs.

Whether you need a small run of prototype seals or millions of production parts, R&R offers scalable molding capacity through in-house presses and our global manufacturing network. We provide rapid prototyping, First Article Inspections (AS9102), and PPAP documentation to accelerate approvals, and we maintain inventory programs for high-usage O-rings.

Our flexible model means you get what you need, when you need it — without compromising compliance. From spliced large-diameter rings to micro precision seals, we support both urgent replacement needs and long-term supply agreements.

From compound selection to performance testing, we provide hands-on support for mission-critical sealing. Our lab partners and in-house capabilities include tensile strength, compression set, hardness, and extrusion resistance testing, helping validate performance before deployment.

We are ITAR-registered and DFARS/CMMC compliant, ensuring secure handling of defense-related data. For food and water systems, we supply FDA 21 CFR, NSF/ANSI 61, and UL-rated materials. For aerospace and oil & gas, we offer AMS, BMS, API, and NORSOK M-710 qualified compounds.

Request A Quote

O-Ring Applications Across Industries

Agriculture

Hydraulic Seals, Weatherproof Enclosures, Bearing Seals and Shaft Seals

Aerospace

Fuel System & Engine Components, Sensor and Connector Seals, Hydraulic and Pneumatic Seals

Oil & Gas

Pumps, Valves, and Housings, Packer and Downhole Seals, Blowout Preventer (BOP) Seals

Food & Beverage

Dairy & Beverage Systems (FDA / NSF compliant seals), High-Temp Fryer & Hot-Oil Systems (Viton® / FKM)

Water Infrastructure

Large-Diameter Gaskets for Pipelines and Industrial Equipment

Industrial

Specialty Profiles Including Quad-Rings (X-rings) and Seals for Non-Standard Groove Geometries

As specialists in precision rubber manufacturing since 1977, R&R Rubber consistently delivers proven solutions – while remaining ready to take on new designs and emerging application challenges.

O-Ring Applications Across Industries

Agriculture

Hydraulic Seals, Weatherproof Enclosures, Bearing Seals and Shaft Seals

Aerospace

Fuel System & Engine Components, Sensor and Connector Seals, Hydraulic and Pneumatic Seals

Oil & Gas

Pumps, Valves, and Housings, Packer and Downhole Seals, Blowout Preventer (BOP) Seals

Food & Beverage

Dairy & Beverage Systems (FDA / NSF compliant seals), High-Temp Fryer & Hot-Oil Systems (Viton® / FKM)

Water Infrastructure

Large-Diameter Gaskets for Pipelines and Industrial Equipment

Industrial

Specialty Profiles Including Quad-Rings (X-rings) and Seals for Non-Standard Groove Geometries

As specialists in precision rubber manufacturing since 1977, R&R Rubber consistently delivers proven solutions – while remaining ready to take on new designs and emerging application challenges.

Contact

Ready to spec your next O-ring? Our team is ready to talk!

Upload a drawing or request a quote today. As an ITAR-registered supplier, we securely handle controlled technical data and provide full lot traceability with every order.

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