568-176 HSN90 DURO ORINGS

Part number HSN90176 is an AS568-176 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 9.237 in (234.62 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 9.443 in (239.85 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists heat and oxidation, ozone and weathering, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) is valued for improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It is not the right choice where strong oxidizing acids or ketones are present.

You will find this material specified across automotive air conditioning, engine timing systems, and commercial refrigeration.

Reference part number HSN90176 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.