HSN (HNBR) 80 568-176

Ordered as HSN80176, this is an AS568-176 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring supplied with an inside diameter of 9.237 in (234.62 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 9.443 in (239.85 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, HNBR (Hydrogenated Nitrile) is valued for the oil resistance of nitrile with substantially better heat capability, improved ozone and weathering resistance over standard nitrile. The compound resists heat and oxidation, ozone and weathering, and modern refrigerants. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

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

Reference part number HSN80176 when ordering; the item is sold individually. Nominal inside diameter is listed as 9 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.