O-Ring Supply Co.
ISO Certified
10,000+ O-Ring Sizes
Custom Manufacturing

O-Ring Applications

Design guides, material recommendations, and sizing advice for demanding sealing environments.

Hydraulic Cylinders

Rod and piston seal material selection, groove dimensions, compression rates, and anti-extrusion solutions for mobile an...

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Automotive Fuel Systems

Material specs for gasoline, diesel, biofuel and hybrid fuel systems. Meet OEM temperature and permeation requirements....

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Medical Devices

USP Class VI, FDA 21 CFR 177.2600, and ISO 10993 biocompatible sealing solutions for life-science equipment....

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Food & Beverage Processing

FDA-compliant EPDM and silicone seals for CIP/SIP, pasteurization, and hygienic clamp fittings in breweries, dairies, an...

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Aerospace Hydraulic & Fuel

High-reliability sealing for commercial aviation, defence and UAV applications....

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LNG & Cryogenic Sealing

PTFE and spring-energised seals for liquefied natural gas, liquid nitrogen and ultra-low temperature industrial processe...

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Pharmaceutical CIP/SIP

USP Class VI silicone and peroxide-cured EPDM for clean-in-place, steam-in-place and bioreactor sealing....

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Oil & Gas Downhole

HNBR and FKM O-rings engineered for HPHT wells, sour service and blowout preventer sealing....

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Semiconductor Processing

Ultra-high purity FFKM and PTFE seals for plasma chambers, CVD, etch and deposition tools....

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Water Treatment & Plumbing

FDA, NSF 61 and WRAS certified EPDM seals for drinking water, wastewater and plumbing systems....

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Steam & Autoclaves

Peroxide-cured EPDM and steam-resistant FFKM for saturated steam, autoclaves and boiler seals....

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Pneumatic Cylinders

Low-friction, fast-response sealing for compressed air cylinders, valves and fittings....

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Need a custom solution?

We supply standard and custom O-rings for all of the applications above.