HSN (HNBR) 80 568-913

HSN80913 is an AS568-913 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 0.986 in (25.04 mm), a cross section of 0.116 in (2.95 mm), and an outside diameter of 1.218 in (30.94 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists petroleum oils and fuels, heat and oxidation, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for the oil resistance of nitrile with substantially better heat capability, 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. Verify compatibility before use with esters or ketones.

Maintenance and OEM teams specify it across oilfield and downhole equipment, engine timing systems, and commercial refrigeration.

Order part number HSN80913, sold individually. Nominal inside diameter is listed as 13/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.