568-358 HSN90 DURO ORINGS

The HSN90358 is an AS568-358 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.6 in (142.24 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.02 in (152.91 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

HNBR (Hydrogenated Nitrile) delivers improved ozone and weathering resistance over standard nitrile, long service life in refrigerant and oilfield duty. It resists modern refrigerants, ozone and weathering, and sour gas and amine inhibitors. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or ketones are present.

It sees regular use in heavy-duty powertrain, commercial refrigeration, and automotive air conditioning.

Reference part number HSN90358 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.