HSN (HNBR) 80 568-329

APG stocks the HSN80329, an AS568-329 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 1.975 in (50.17 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.395 in (60.83 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists modern refrigerants, heat and oxidation, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) is specified for long service life in refrigerant and oilfield duty, improved ozone and weathering resistance over standard nitrile. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

You will find this material specified across commercial refrigeration, oilfield and downhole equipment, and heavy-duty powertrain.

This item is sold individually under part number HSN80329. Nominal inside diameter is listed as 2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.