HSN (HNBR) 80 568-456

Part number HSN80456 is an AS568-456 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 13.475 in (342.27 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 14.025 in (356.24 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

HNBR (Hydrogenated Nitrile) offers strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. It resists modern refrigerants, heat and oxidation, and sour gas and amine inhibitors. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in strong oxidizing acids or ketones.

Maintenance and OEM teams specify it across heavy-duty powertrain, commercial refrigeration, and engine timing systems.

This item is sold individually under part number HSN80456. 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.