*AS568-131 BLACK HNBR 70 D ORING

Part number HSN70131 is an AS568-131 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.674 in (42.52 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.88 in (47.75 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

HNBR (Hydrogenated Nitrile) is specified here for oil resistance of nitrile with substantially better heat capability, improved ozone and weathering resistance over standard nitrile. The material holds up against heat and oxidation, ozone and weathering, and petroleum oils and fuels. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with strong oxidizing acids or ketones.

You will find this material specified across automotive air conditioning, commercial refrigeration, and heavy-duty powertrain.

This item is sold individually under part number HSN70131. Nominal inside diameter is listed as 1 11/16 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.