HSN (HNBR) 80 568-284

The HSN80284 is an AS568-284 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 17.955 in (456.06 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 18.233 in (463.12 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. It resists ozone and weathering, modern refrigerants, and sour gas and amine inhibitors. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in ketones or esters.

You will find this material specified across commercial refrigeration, heavy-duty powertrain, and engine timing systems.

HSN80284 ships individually. Nominal inside diameter is listed as 18 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.