HSN (HNBR) 80 568-376

Part number HSN80376 is an AS568-376 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring 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 creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to sour gas and amine inhibitors, modern refrigerants, and heat and oxidation. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Exposure to strong oxidizing acids or chlorinated hydrocarbons will shorten service life.

You will find this material specified across oilfield and downhole equipment, automotive air conditioning, and engine timing systems.

Reference part number HSN80376 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.