568-272 HSN90 DURO ORINGS

Ordered as HSN90272, this is an AS568-272 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 9.484 in (240.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.762 in (247.95 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is known for the oil resistance of nitrile with substantially better heat capability, improved ozone and weathering resistance over standard nitrile. The material holds up against modern refrigerants, petroleum oils and fuels, and ozone and weathering. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in chlorinated hydrocarbons or strong oxidizing acids.

Typical settings include heavy-duty powertrain, engine timing systems, and commercial refrigeration.

Stocked as HSN90272 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.