568-381 GREEN HNBR (HSN) 70 ORINGS

Part number HS70381 is an AS568-381 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 11.975 in (304.17 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 12.395 in (314.83 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

HNBR (Hydrogenated Nitrile) delivers excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. It resists modern refrigerants, heat and oxidation, and ozone and weathering. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with chlorinated hydrocarbons or strong oxidizing acids.

You will find this material specified across oilfield and downhole equipment, engine timing systems, and heavy-duty powertrain.

Stocked as HS70381 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.