Buna 70-031-Black-Pk100

SB-H70031-100 is an AS568-031 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.739 in (44.17 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.879 in (47.73 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 1.875IDX1.75"ODX.0625"CS.

As a material, Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. It resists greases and lubricants, propane and butane, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Typical settings include construction equipment, automotive, and general industrial maintenance.

Reference part number SB-H70031-100 when ordering; the item is sold by the bag. Nominal inside diameter is listed as 1 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.