568-276 HSN90 DURO ORINGS

Part number HSN90276 is an AS568-276 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring built to an inside diameter of 10.984 in (278.99 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 11.262 in (286.05 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to ozone and weathering, heat and oxidation, and modern refrigerants. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C).

Typical settings include oilfield and downhole equipment, heavy-duty powertrain, and commercial refrigeration.

Stocked as HSN90276 and sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.