568-020 HSN90 DURO ORINGS

Ordered as HSN90020, this is an AS568-020 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 0.864 in (21.95 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.004 in (25.5 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) is specified here for strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. The compound resists heat and oxidation, sour gas and amine inhibitors, and petroleum oils and fuels. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Applications involving chlorinated hydrocarbons or strong oxidizing acids call for a different compound.

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

This item is sold individually under part number HSN90020. Nominal inside diameter is listed as 7/8 inch. Review your operating media and conditions against this specification before installation.