HSN (HNBR) 80 568-268

Ordered as HSN80268, this is an AS568-268 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 8.484 in (215.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.762 in (222.55 mm). The o-ring compresses into its gland to block fluid or gas migration across a joint.

HNBR (Hydrogenated Nitrile) is widely chosen for excellent abrasion and tear strength, long service life in refrigerant and oilfield duty. It resists heat and oxidation, modern refrigerants, and sour gas and amine inhibitors. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Applications involving strong oxidizing acids or ketones call for a different compound.

You will find this material specified across commercial refrigeration, automotive air conditioning, and oilfield and downhole equipment.

Stocked as HSN80268 and 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. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.