568-025 GREEN HNBR (HSN) 70 ORINGS

HS70025 is an AS568-025 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.176 in (29.87 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.316 in (33.43 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists ozone and weathering, sour gas and amine inhibitors, and modern refrigerants. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is known for the oil resistance of nitrile with substantially better heat capability and strong resistance to rapid gas decompression. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Applications involving ketones or strong oxidizing acids call for a different compound.

It sees regular use in commercial refrigeration, oilfield and downhole equipment, and engine timing systems.

This item is sold individually under part number HS70025. As always, verify media compatibility and operating conditions against the requirements of your specific application.