568-906 HSN90 DURO ORINGS

Ordered as HSN90906, this is an AS568-906 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 0.468 in (11.89 mm), a cross section of 0.078 in (1.98 mm), and an outside diameter of 0.624 in (15.85 mm). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to ozone and weathering, heat and oxidation, and sour gas and amine inhibitors. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It should not be specified for service in chlorinated hydrocarbons or strong oxidizing acids.

Common environments for this compound include heavy-duty powertrain, engine timing systems, and commercial refrigeration.

HSN90906 ships individually. Nominal inside diameter is listed as 3/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.