568-338 HSN90 DURO ORINGS

HSN90338 is an AS568-338 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 3.1 in (78.74 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.52 in (89.41 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

HNBR (Hydrogenated Nitrile) is widely chosen for excellent abrasion and tear strength, the oil resistance of nitrile with substantially better heat capability. It resists petroleum oils and fuels, ozone and weathering, and modern refrigerants. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C).

You will find this material specified across automotive air conditioning, heavy-duty powertrain, and commercial refrigeration.

Reference part number HSN90338 when ordering; the item is sold individually. Unit weight is approximately 7.6387 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.