HSN (HNBR) 80 568-157

APG stocks the HSN80157, an AS568-157 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring supplied with an inside diameter of 4.487 in (113.97 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.693 in (119.2 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

HNBR (Hydrogenated Nitrile) is specified here for oil resistance of nitrile with substantially better heat capability and strong resistance to rapid gas decompression. It resists heat and oxidation, ozone and weathering, and sour gas and amine inhibitors. Published continuous service range is -40°F (-40°C) to 325°F (162.8°C).

Maintenance and OEM teams specify it across engine timing systems, heavy-duty powertrain, and automotive air conditioning.

This item is sold individually under part number HSN80157. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.