568-337 GREEN HNBR (HSN) 70 ORINGS

APG stocks the HS70337, an AS568-337 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.975 in (75.57 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.395 in (86.23 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to ozone and weathering, petroleum oils and fuels, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Verify compatibility before use with chlorinated hydrocarbons or esters.

Maintenance and OEM teams specify it across oilfield and downhole equipment, engine timing systems, and commercial refrigeration.

Reference part number HS70337 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.