568-021 HSN90 DURO ORINGS

The HSN90021 is an AS568-021 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 0.926 in (23.52 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.066 in (27.08 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists modern refrigerants, ozone and weathering, and petroleum oils and fuels. HNBR (Hydrogenated Nitrile) delivers long service life in refrigerant and oilfield duty, excellent abrasion and tear strength. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Exposure to esters or chlorinated hydrocarbons will shorten service life.

You will find this material specified across engine timing systems, heavy-duty powertrain, and automotive air conditioning.

This item is sold individually under part number HSN90021. Unit weight is approximately 0.2695 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.