568-338 GREEN HNBR (HSN) 70 ORINGS

Part number HS70338 is an AS568-338 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.1 in (78.74 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.52 in (89.41 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum oils and fuels, modern refrigerants, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for excellent abrasion and tear strength, strong resistance to rapid gas decompression. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with ketones or strong oxidizing acids.

You will find this material specified across automotive air conditioning, oilfield and downhole equipment, and commercial refrigeration.

HS70338 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.