568-277 HSN90 DURO ORINGS

This o-ring is supplied in AS568-277 green HNBR (Hydrogenated Nitrile) 90 Shore A built to 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), catalogued under part number HSN90277. It creates a positive seal at flange, piston and rod interfaces without added hardware.

As a material, HNBR (Hydrogenated Nitrile) offers long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. It resists sour gas and amine inhibitors, heat and oxidation, and ozone and weathering. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Verify compatibility before use with chlorinated hydrocarbons or esters.

Maintenance and OEM teams specify it across commercial refrigeration, automotive air conditioning, and oilfield and downhole equipment.

This item is sold individually under part number HSN90277. Nominal inside diameter is listed as 11 1/2 inch. Review your operating media and conditions against this specification before installation.