568-326 HSN90 DURO ORINGS

APG stocks the HSN90326, an AS568-326 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 1.6 in (40.64 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.02 in (51.31 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists sour gas and amine inhibitors, modern refrigerants, and ozone and weathering. HNBR (Hydrogenated Nitrile) is specified for improved ozone and weathering resistance over standard nitrile, the oil resistance of nitrile with substantially better heat capability. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

It sees regular use in heavy-duty powertrain, commercial refrigeration, and engine timing systems.

Order part number HSN90326, sold individually. Nominal inside diameter is listed as 1 5/8 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.