568-354 HSN90 DURO ORINGS

Part number HSN90354 is an AS568-354 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.1 in (129.54 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.52 in (140.21 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against modern refrigerants, ozone and weathering, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) delivers long service life in refrigerant and oilfield duty, strong resistance to rapid gas decompression. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It is not the right choice where chlorinated hydrocarbons or strong oxidizing acids are present.

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

Order part number HSN90354, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.