HSN (HNBR) 80 568-356

Part number HSN80356 is an AS568-356 green HNBR (Hydrogenated Nitrile) 80 Shore A O-Ring built to an inside diameter of 5.35 in (135.89 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.77 in (146.56 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists ozone and weathering, heat and oxidation, and petroleum oils and fuels. HNBR (Hydrogenated Nitrile) is valued for excellent abrasion and tear strength, improved ozone and weathering resistance over standard nitrile. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C).

It sees regular use in engine timing systems, commercial refrigeration, and oilfield and downhole equipment.

Reference part number HSN80356 when ordering; the item is sold individually. Unit weight is approximately 12.7034 g and nominal inside diameter is listed as 5 3/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.