HSN (HNBR) 80 568-173

Ordered as HSN80173, this is an AS568-173 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 8.487 in (215.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 8.693 in (220.8 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists modern refrigerants, heat and oxidation, and petroleum oils and fuels. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is widely chosen 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). Verify compatibility before use with ketones or chlorinated hydrocarbons.

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

Order part number HSN80173, sold individually. Nominal inside diameter is listed as 8 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.