568-443 HSN90 DURO ORINGS

Part number HSN90443 is an AS568-443 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 7.475 in (189.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.025 in (203.84 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) is specified here for excellent abrasion and tear strength, oil resistance of nitrile with substantially better heat capability. This material stands up to ozone and weathering, petroleum oils and fuels, and modern refrigerants. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C).

Common environments for this compound include heavy-duty powertrain, oilfield and downhole equipment, and automotive air conditioning.

Order part number HSN90443, sold individually. Nominal inside diameter is listed as 7 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.