568-375 HSN90 DURO ORINGS

HSN90375 is an AS568-375 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 9.475 in (240.67 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 9.895 in (251.33 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

HNBR (Hydrogenated Nitrile) is specified here for strong resistance to rapid gas decompression, improved ozone and weathering resistance over standard nitrile. The material holds up against sour gas and amine inhibitors, modern refrigerants, and heat and oxidation. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. It is not the right choice where chlorinated hydrocarbons or esters are present.

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

Stocked as HSN90375 and sold individually. Nominal inside diameter is listed as 9 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to 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.