568-246 BLACK HNBR HSN70 O-Ring

This o-ring is supplied in AS568-246 black HNBR (Hydrogenated Nitrile) 70 Shore A built to an inside diameter of 4.484 in (113.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.762 in (120.95 mm), catalogued under part number HSN70246. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The compound resists petroleum oils and fuels, modern refrigerants, and ozone and weathering. That behavior comes from the compound itself: HNBR (Hydrogenated Nitrile) offers strong resistance to rapid gas decompression and the oil resistance of nitrile with substantially better heat capability. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service.

You will find this material specified across automotive air conditioning, engine timing systems, and commercial refrigeration.

Order part number HSN70246, sold individually. Unit weight is approximately 4.591 g and nominal inside diameter is listed as 4 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.