HSN (HNBR) 80 568-374

Ordered as HSN80374, this is an AS568-374 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 9.225 in (234.32 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 9.645 in (244.98 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, HNBR (Hydrogenated Nitrile) delivers excellent abrasion and tear strength, the oil resistance of nitrile with substantially better heat capability. This material stands up to sour gas and amine inhibitors, ozone and weathering, and modern refrigerants. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Exposure to ketones or chlorinated hydrocarbons will shorten service life.

Common environments for this compound include engine timing systems, automotive air conditioning, and oilfield and downhole equipment.

Stocked as HSN80374 and sold individually. Nominal inside diameter is listed as 9 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.