568-371 HSN90 DURO ORINGS

APG stocks the HSN90371, an AS568-371 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 8.475 in (215.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.895 in (225.93 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to petroleum oils and fuels, sour gas and amine inhibitors, and heat and oxidation. HNBR (Hydrogenated Nitrile) delivers excellent abrasion and tear strength, strong resistance to rapid gas decompression. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in esters or strong oxidizing acids.

Typical settings include heavy-duty powertrain, engine timing systems, and oilfield and downhole equipment.

Reference part number HSN90371 when ordering; the item is sold individually. Nominal inside diameter is listed as 8 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.