568-357 HSN90 DURO ORINGS

HSN90357 is an AS568-357 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring measuring an inside diameter of 5.475 in (139.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.895 in (149.73 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

HNBR (Hydrogenated Nitrile) is specified here for long service life in refrigerant and oilfield duty, excellent abrasion and tear strength. Expect good resistance to petroleum oils and fuels, heat and oxidation, and modern refrigerants. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C). It should not be specified for service in esters or ketones.

Typical settings include commercial refrigeration, engine timing systems, and automotive air conditioning.

Reference part number HSN90357 when ordering; the item is sold individually. Unit weight is approximately 13.242 g and nominal inside diameter is listed as 5 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.