568-131 HSN90 DURO ORINGS

This o-ring is supplied in AS568-131 green HNBR (Hydrogenated Nitrile) 90 Shore A with an inside diameter of 1.674 in (42.52 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.88 in (47.75 mm), catalogued under part number HSN90131. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. Expect good resistance to petroleum oils and fuels, modern refrigerants, and ozone and weathering. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Applications involving strong oxidizing acids or chlorinated hydrocarbons call for a different compound.

Typical settings include oilfield and downhole equipment, automotive air conditioning, and commercial refrigeration.

This item is sold individually under part number HSN90131. Nominal inside diameter is listed as 1 11/16 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.