568-376 HSN90 DURO ORINGS

Part number HSN90376 is an AS568-376 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 9.725 in (247.02 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.145 in (257.68 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against petroleum oils and fuels, modern refrigerants, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) delivers the oil resistance of nitrile with substantially better heat capability, excellent abrasion and tear strength. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in strong oxidizing acids or chlorinated hydrocarbons.

Maintenance and OEM teams specify it across heavy-duty powertrain, engine timing systems, and automotive air conditioning.

Stocked as HSN90376 and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.