**568-156 HSN90 DURO ORINGS

Part number HSN90156 is an AS568-156 green HNBR (Hydrogenated Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 4.237 in (107.62 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.443 in (112.85 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, HNBR (Hydrogenated Nitrile) is specified for the oil resistance of nitrile with substantially better heat capability and strong resistance to rapid gas decompression. This material stands up to petroleum oils and fuels, ozone and weathering, and heat and oxidation. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C).

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

This item is sold individually under part number HSN90156. Nominal inside diameter is listed as 4 1/4 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.