Buna 70-263-Black-Pk10

SB-H70263-10 is an AS568-263 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 7.234 in (183.74 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.512 in (190.8 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. This item is further identified as 0.139CSX7.234"IDX7.512"OD.

As a material, Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Expect good resistance to petroleum-based oils, many alcohols, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ozone and direct sunlight or automotive brake fluid are present.

Typical settings include fluid power, construction equipment, and general industrial maintenance.

Reference part number SB-H70263-10 when ordering; the item is sold by the bag. Nominal inside diameter is listed as 7 1/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.