1a72e037_selection_chart_for_oil_seals___Applications
[Materials & Temperature] Highly Saturated Nitrile (HSN, HNBR) -26°C to 160°C [Use With These Fluids] petroleum oils, H2S, CO2 [Applications] 
Oil seals made from highly saturated nitrile have excellent resistance to petroleum oils and sour gas. Because of the extended temperature range of highly saturated nitrile, it is becoming a preferred compound in the oil patch.
Material selection chart for oil seals.
Applications