HSN (HNBR) 80 568-254

Part number HSN80254 is an AS568-254 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 5.484 in (139.29 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.762 in (146.35 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) is specified here for improved ozone and weathering resistance over standard nitrile, excellent abrasion and tear strength. This material stands up to ozone and weathering, sour gas and amine inhibitors, and petroleum oils and fuels. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C).

You will find this material specified across commercial refrigeration, engine timing systems, and heavy-duty powertrain.

HSN80254 ships individually. Unit weight is approximately 0.0055 g and nominal inside diameter is listed as 5 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.