568-274 HSN90 DURO ORINGS

The HSN90274 is an AS568-274 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring with an inside diameter of 9.984 in (253.59 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 10.262 in (260.65 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, HNBR (Hydrogenated Nitrile) is valued for strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. This material stands up to modern refrigerants, heat and oxidation, and sour gas and amine inhibitors. Continuous operating temperature is published at -40°F (-40°C) to 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 automotive air conditioning, engine timing systems, and oilfield and downhole equipment.

Order part number HSN90274, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.