568-350 GREEN HNBR (HSN) 70 ORINGS

Part number HS70350 is an AS568-350 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 4.6 in (116.84 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.02 in (127.51 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, HNBR (Hydrogenated Nitrile) is widely chosen for excellent abrasion and tear strength, strong resistance to rapid gas decompression. The material holds up against modern refrigerants, heat and oxidation, and sour gas and amine inhibitors. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Exposure to chlorinated hydrocarbons or esters will shorten service life.

It sees regular use in engine timing systems, heavy-duty powertrain, and automotive air conditioning.

HS70350 ships individually. Nominal inside diameter is listed as 4 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.