568-268 BLACK HNBR HSN70 O-Ring

Ordered as HSN70268, this is an AS568-268 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 8.484 in (215.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 8.762 in (222.55 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

HNBR (Hydrogenated Nitrile) offers improved ozone and weathering resistance over standard nitrile, strong resistance to rapid gas decompression. This material stands up to petroleum oils and fuels, ozone and weathering, and heat and oxidation. Service temperature is rated from -40°F (-40°C) through 325°F (162.8°C). Exposure to chlorinated hydrocarbons or ketones will shorten service life.

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

Reference part number HSN70268 when ordering; the item is sold individually. Unit weight is approximately 7.9462 g and nominal inside diameter is listed as 8 1/2 inch. Review your operating media and conditions against this specification before installation.