With four points of contact for a strong seal, these X-profile O-rings are often used in dynamic applications, such as on pistons and rotating shafts. Also known as Quattro seals and X-rings, they resist rolling and twisting better than round- and square-profile O-rings. They also require less compression to seal, which reduces friction and extends their service life. These O-rings are made of Buna-N, which is resilient and tear resistant. They resist hydraulic and motor oil.

Choose these O-rings for their adherence to strict military standards for material and construction. Made of Buna-N, they stand up to a variety of oils and fuels as well as ammonia, ethylene glycol, and isopropyl alcohol. They’re also resilient and tear resistant. These O-rings are made in the U.S.

O-rings that meet MIL-I-45208 have undergone rigorous inspection for quality control.

If these O-rings deteriorate, they’ll be picked up by metal- and X-ray-detection systems. Made of Buna-N rubber, they resist common oils, fuels, grease, and hydraulic and motor fluids. Because they’re made with FDA compliant materials, they’re often used in food applications and are good for use with animal oil, vegetable oil, and water. They also offer excellent tear resistance. All have shelf life, cure date, and traceable lot number printed on the bag.

More abrasion resistant than Buna-N O-rings, these polyurethane O-rings resist mineral oil, motor oil, and ethylene glycol. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.

These Viton® fluoroelastomer O-rings resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. They have a round profile and are suitable for both static and dynamic sealing applications.

Inch O-rings have a dash number and are sized to the SAE standard AS568.

These durable Viton® fluoroelastomer O-rings bounce back to shape after repeated compression better than other types of Viton® fluoroelastomer O-rings. They resist a wide range of chemicals, including boric acid, butyl alcohol, and ethylene glycol. These O-rings have a round profile and are suitable for both static and dynamic sealing applications. They have shelf life, cure date, and traceable lot number printed on the bag.

Inch O-rings are sized to the SAE standard AS568.

Because one black O-ring looks just like another, these Viton® fluoroelastomer O-rings are brown for easy identification. They resist a wide range of chemicals, including benzene, butyl alcohol, and ethylene glycol. All have a round profile and are suitable for both static and dynamic sealing applications. O-rings have shelf life, cure date, and traceable lot number printed on the bag.

Inch O-rings have a dash number and are sized to the SAE standard AS568.

Made of Viton® fluoroelastomer, these O-rings meet MIL-R-83248. They resist chemicals such as benzene, butyl alcohol, and ethylene glycol. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings are sized to the SAE standard AS568.

If the FEP casing on these O-rings wears away, the Viton® fluoroelastomer core will continue to ward off chemicals. They are just as chemical resistant as PTFE O-rings, but the core is soft to make them more compressible. These O-rings resist acetone, solvents, methanol, and boric acid. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.

The FEP casing on these O-rings provides the same level of resistance to harsh chemicals as PTFE O-rings, but the silicone core is soft to make these O-rings more compressible. They resist acetone, solvents, methanol, and boric acid. All have a round profile and are suitable for a wide range of static and dynamic sealing applications. These O-rings are sized to the SAE standard AS568.

Rigid and hard with a slippery surface, these PTFE O-rings resist harsh chemicals, such as acetone, fluorinated solvents, methanol, and boric acid. They have a round profile and are suitable for a wide range of static and dynamic sealing applications.

Inch O-rings have a dash number and are sized to the SAE standard AS568.

While these Aflas O-rings are commonly used with petroleum fluids, they also resist many chemicals, such as ammonia, calcium hydroxide, and acetic, boric, and phosphoric acids. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.

If these O-rings deteriorate they can be picked up by metal detection systems. Made of fluoroelastomer, they resist a wide range of chemicals, including citric and nitric acid. O-rings are sized to the SAE standard AS568. All have shelf life, cure date, and traceable lot number printed on the bag.

These silicone O-rings have a round profile and are suitable for a wide range of static sealing applications. All have a cure date and a traceable lot number printed on the bag.

Inch O-rings have a dash number. They withstand temperatures up to 400° F. USP VI Certified, they meet testing requirements for material quality.

Able to withstand temperatures up to 400° F, these silicone O-rings are softer than standard silicone O-rings for a better seal in low-pressure applications. They have a round profile and are suitable for a wide range of static and dynamic sealing applications. All are sized to the SAE standard AS568.

If these O-rings deteriorate they can be picked up by metal detection systems. Made of silicone, they resist high temperatures, as well as alcohol and water. O-rings are sized to the SAE standard AS568. All have shelf life, cure date, and traceable lot number printed on the bag.