Made of Buna-N, these O-rings resist grease, hydraulic oil, and motor oil—plus mild chemicals and water.

Harder than standard Buna-N O-rings, these 90A durometer O-rings are more durable and wear resistant.

Choose these O-rings for their adherence to strict military standards for material and construction.

Softer than standard Viton® fluoroelastomer O-rings, these offer a better seal in low-pressure applications.

Tested to meet ASTM E595, a standard used by NASA, these O-rings give off almost no volatile emissions that could damage sensitive electronics, even in a vacuum.

Tested to meet ASTM E595, a standard used by NASA, these O-rings give off almost no volatile emissions that could damage sensitive electronics, even in a vacuum. They’re softer than standard Viton®, so they better conform to irregular surfaces.

These durable O-rings bounce back to shape after repeated compression better than other types of Viton® fluoroelastomer O-rings.

Made and bagged in an ISO Class 7 and Fed. Spec. Class 10,000 clean room.

Made of Kalrez 6230, these O-rings are for use when high purity is essential, such as with food and semiconductors.

Rigid and hard with a slippery surface, these PTFE O-rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and boric acid.

These square-profile O-rings have flat edges on all four sides, so they cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.

These silicone O-rings have a round profile and are suitable for a wide range of static sealing applications.

These O-rings also resist ethanol and ethylene glycol.