HSN (HNBR) 80 568-908

Ordered as HSN80908, this is an AS568-908 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 0.644 in (16.36 mm), a cross section of 0.087 in (2.21 mm), and an outside diameter of 0.818 in (20.78 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 long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Expect good resistance to ozone and weathering, modern refrigerants, and petroleum oils and fuels. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C).

Common environments for this compound include commercial refrigeration, engine timing systems, and automotive air conditioning.

This item is sold individually under part number HSN80908. Nominal inside diameter is listed as 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.