568-240 HSN90 DURO ORINGS

This o-ring is supplied in AS568-240 green HNBR (Hydrogenated Nitrile) 90 Shore A measuring an inside diameter of 3.734 in (94.84 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.012 in (101.9 mm), catalogued under part number HSN90240. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. Expect good resistance to petroleum oils and fuels, modern refrigerants, and ozone and weathering. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Applications involving esters or ketones call for a different compound.

You will find this material specified across automotive air conditioning, engine timing systems, and oilfield and downhole equipment.

Stocked as HSN90240 and sold individually. Unit weight is approximately 4.0058 g and nominal inside diameter is listed as 3 3/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.