568-238 HSN90 DURO ORINGS

HSN90238 is an AS568-238 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 3.484 in (88.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.762 in (95.55 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Expect good resistance to heat and oxidation, sour gas and amine inhibitors, and modern refrigerants. HNBR (Hydrogenated Nitrile) is widely chosen for long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). Applications involving chlorinated hydrocarbons or esters call for a different compound.

You will find this material specified across automotive air conditioning, commercial refrigeration, and engine timing systems.

Reference part number HSN90238 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.