HSN (HNBR) 80 568-126

APG stocks the HSN80126, an AS568-126 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring supplied with an inside diameter of 1.362 in (34.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.568 in (39.83 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against modern refrigerants, petroleum oils and fuels, and heat and oxidation. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) is valued for long service life in refrigerant and oilfield duty, the oil resistance of nitrile with substantially better heat capability. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C).

It sees regular use in heavy-duty powertrain, automotive air conditioning, and commercial refrigeration.

Order part number HSN80126, sold individually. Nominal inside diameter is listed as 1 3/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.