*HSN (HNBR) 80 568-427

Part number HSN80427 is an AS568-427 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring measuring an inside diameter of 4.725 in (120.02 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.275 in (133.99 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to petroleum oils and fuels, heat and oxidation, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) is known for long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or strong oxidizing acids are present.

Common environments for this compound include engine timing systems, oilfield and downhole equipment, and heavy-duty powertrain.

HSN80427 ships individually. Nominal inside diameter is listed as 4 3/4 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.