568-278 GREEN HNBR (HSN) 70 ORINGS

Part number HS70278 is an AS568-278 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 11.984 in (304.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 12.262 in (311.45 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, HNBR (Hydrogenated Nitrile) offers excellent abrasion and tear strength, strong resistance to rapid gas decompression. The compound resists heat and oxidation, modern refrigerants, and petroleum oils and fuels. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where esters or chlorinated hydrocarbons are present.

Typical settings include oilfield and downhole equipment, heavy-duty powertrain, and automotive air conditioning.

HS70278 ships individually. Nominal inside diameter is listed as 12 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.