HSN (HNBR) 80 568-316

Ordered as HSN80316, this is an AS568-316 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 0.85 in (21.59 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.27 in (32.26 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, HNBR (Hydrogenated Nitrile) offers long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. This material stands up to modern refrigerants, sour gas and amine inhibitors, and ozone and weathering. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Verify compatibility before use with ketones or chlorinated hydrocarbons.

You will find this material specified across engine timing systems, oilfield and downhole equipment, and heavy-duty powertrain.

Reference part number HSN80316 when ordering; the item is sold individually. Nominal inside diameter is listed as 7/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.