HSN (HNBR) 80 568-911

The HSN80911 is an AS568-911 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring supplied with an inside diameter of 0.863 in (21.92 mm), a cross section of 0.116 in (2.95 mm), and an outside diameter of 1.095 in (27.81 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists modern refrigerants, sour gas and amine inhibitors, and ozone and weathering. HNBR (Hydrogenated Nitrile) is specified for improved ozone and weathering resistance over standard nitrile, excellent abrasion and tear strength. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Applications involving strong oxidizing acids or esters call for a different compound.

It sees regular use in heavy-duty powertrain, automotive air conditioning, and commercial refrigeration.

Stocked as HSN80911 and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.