*568-248 BLACK HNBR HSN70 O-Ring

Ordered as HSN70248, this is an AS568-248 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring with an inside diameter of 4.734 in (120.24 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.012 in (127.3 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for excellent abrasion and tear strength, strong resistance to rapid gas decompression. Expect good resistance to modern refrigerants, ozone and weathering, and sour gas and amine inhibitors. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where ketones or chlorinated hydrocarbons are present.

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

This item is sold individually under part number HSN70248. Unit weight is approximately 4.5288 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.