Hydrogenated Nitrile

Hydrogenated nitrile is a synthetic polymer that results from the hydrogenation of nitrile rubber (NBR). In this process the molecular "double bonds" in the NBR primary polymer chain undergo a hydrogenation process and therefore the term "hydrogenated nitrile" (HNBR). The allowable temperature range extends to 149°C (300°F) with short periods at higher temperature possible. By following design guidelines effective sealing can be achieved at -32°C (-25°F) for static applications.

For dynamic applications however, operating temperatures are limited to above - 23°C (-10°F). HNBR compounds possess superior mechanical characteristics, particularly their high strength. For sealing applications up to approximately 159°C (300°F), this is an advantage as it prevents extrusion and wear.

Chemical resistance
Aliphatic hydrocarbons
Vegetable and animal fats and oils
HFA, HFB and HFC 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 (ketone and ester)
Strong acids