568-038 GREEN HNBR (HSN) 70 ORINGS

Ordered as HS70038, this is an AS568-038 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

This material stands up to ozone and weathering, heat and oxidation, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is specified for excellent abrasion and tear strength, long service life in refrigerant and oilfield duty. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Exposure to esters or ketones will shorten service life.

You will find this material specified across engine timing systems, commercial refrigeration, and oilfield and downhole equipment.

Order part number HS70038, sold individually. Nominal inside diameter is listed as 2 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.