568-440 GREEN HNBR (HSN) 70 ORINGS

This o-ring is supplied in AS568-440 green HNBR (Hydrogenated Nitrile) 70 Shore A measuring an inside diameter of 6.725 in (170.82 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.275 in (184.79 mm), catalogued under part number HS70440. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified for improved ozone and weathering resistance over standard nitrile, long service life in refrigerant and oilfield duty. This material stands up to heat and oxidation, sour gas and amine inhibitors, and petroleum oils and fuels. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). Applications involving ketones or strong oxidizing acids call for a different compound.

Typical settings include automotive air conditioning, oilfield and downhole equipment, and engine timing systems.

This item is sold individually under part number HS70440. Nominal inside diameter is listed as 6 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.