568-441 HSN90 DURO ORINGS

This o-ring is supplied in AS568-441 green HNBR (Hydrogenated Nitrile) 90 Shore A measuring an inside diameter of 6.975 in (177.17 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.525 in (191.14 mm), catalogued under part number HSN90441. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists ozone and weathering, heat and oxidation, and sour gas and amine inhibitors. HNBR (Hydrogenated Nitrile) is widely chosen for strong resistance to rapid gas decompression, long service life in refrigerant and oilfield duty. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Applications involving esters or ketones call for a different compound.

Common environments for this compound include oilfield and downhole equipment, engine timing systems, and automotive air conditioning.

HSN90441 ships individually. Nominal inside diameter is listed as 7 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.