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Hydrogenated Nitrile (HNBR, HSN)

Hydrogenated Nitrile (HNBR) is a synthetic polymer that results from the hydrogenation of nitrile rubber (NBR). Superior mechanical characteristics, particularly high strength, helps reduce extrusion and wear.


Heat resistance

• Up to 150°C (300°F)


Cold flexibility

• Down to approximately -48°C (-55°F)


Chemical resistance

• Aliphatic hydrocarbons

• Vegetable and animal fats and oils

• HFA, HFB and HFC hydraulic fluids

• Dilute acids, bases and salt solutions at moderate temperatures

• Water and steam up to 149°C (300°F)

• Ozone, aging and weathering


Not compatible with:

• Chlorinated hydrocarbons

• Polar solvents (ketones, esters and ethers)

• Strong acids

Parker Hannifin
O-Ring & Engineered Seals
2360 Palumbo Drive
Lexington, KY 40509
Ph: 859-269-2351
Fax: 859-335-5128