568-277 GREEN HNBR (HSN) 70 ORINGS

Part number HS70277 is an AS568-277 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 11.484 in (291.69 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 11.762 in (298.75 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) offers strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. The compound resists sour gas and amine inhibitors, modern refrigerants, and ozone and weathering. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). Applications involving ketones or chlorinated hydrocarbons call for a different compound.

Maintenance and OEM teams specify it across engine timing systems, commercial refrigeration, and oilfield and downhole equipment.

Order part number HS70277, sold individually. Nominal inside diameter is listed as 11 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.