*568-265 GREEN HNBR (HSN) 70 O-RING

Ordered as HS70265, this is an AS568-265 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 7.734 in (196.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.012 in (203.5 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to modern refrigerants, heat and oxidation, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It is not the right choice where ketones or chlorinated hydrocarbons are present.

You will find this material specified across oilfield and downhole equipment, automotive air conditioning, and engine timing systems.

HS70265 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.