568-451 HSN90 DURO ORINGS

This o-ring is supplied in AS568-451 green HNBR (Hydrogenated Nitrile) 90 Shore A supplied with an inside diameter of 10.975 in (278.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 11.525 in (292.74 mm), catalogued under part number HSN90451. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, HNBR (Hydrogenated Nitrile) is widely chosen for long service life in refrigerant and oilfield duty, improved ozone and weathering resistance over standard nitrile. This material stands up to heat and oxidation, ozone and weathering, and modern refrigerants. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in strong oxidizing acids or chlorinated hydrocarbons.

You will find this material specified across automotive air conditioning, commercial refrigeration, and oilfield and downhole equipment.

Order part number HSN90451, sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.