568-339 GREEN HNBR (HSN) 70 ORINGS

Part number HS70339 is an AS568-339 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.225 in (81.92 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.645 in (92.58 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

HNBR (Hydrogenated Nitrile) is widely chosen for improved ozone and weathering resistance over standard nitrile, the oil resistance of nitrile with substantially better heat capability. It resists sour gas and amine inhibitors, heat and oxidation, and ozone and weathering. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C).

It sees regular use in engine timing systems, commercial refrigeration, and oilfield and downhole equipment.

Order part number HS70339, sold individually. Nominal inside diameter is listed as 3 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.