*HSN (HNBR) 80 568-451

APG stocks the HSN80451, an AS568-451 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 10.975 in (278.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 11.525 in (292.74 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to petroleum oils and fuels, heat and oxidation, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for excellent abrasion and tear strength, strong resistance to rapid gas decompression. The material carries a published service range of -40°F (-40°C) to 325°F (162.8°C).

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

Reference part number HSN80451 when ordering; the item is sold individually. Nominal inside diameter is listed as 11 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.