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Nitrile (Buna-N) O-rings
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Nitrile (Buna-N) O-rings

Buna-N, also known as Nitrile, is the most popular elastomer. More than half of all sealing needs can be met with nitrile. Parco stocks both 70-durometer and 90-durometer Buna-N O-rings. Those O-rings are suitable for applications ranging from -30 to 200°F and are recommended for use with crude oil, gasoline, propane, and water.

Stocked Buna-N O-rings

Elastomer Compound Durometer
(Shore A)
Color Key Properties
Buna-N (Nitrile) 4900-70 70 Black General-purpose
Buna-N (Nitrile) 4900-90 90 Black General-purpose
Buna-N (Nitrile) 4950-70 70 Black General-purpose; FDA conforming

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