HSN (HNBR) 80 568-391

The HSN80391 is an AS568-391 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 21.953 in (557.61 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 22.373 in (568.27 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

HNBR (Hydrogenated Nitrile) is widely chosen for improved ozone and weathering resistance over standard nitrile, excellent abrasion and tear strength. Expect good resistance to modern refrigerants, petroleum oils and fuels, and ozone and weathering. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Exposure to esters or ketones will shorten service life.

Common environments for this compound include commercial refrigeration, oilfield and downhole equipment, and engine timing systems.

Order part number HSN80391, sold individually. Nominal inside diameter is listed as 22 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.