Buna 70-140-Black-Pk50

The SB-H70140-50 is an AS568-140 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.237 in (56.82 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.443 in (62.05 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware. Source specification: 2.4375IDX2.25"ODX.0938"CS.

The compound resists petroleum-based oils, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or automotive brake fluid are present.

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

Reference part number SB-H70140-50 when ordering; the item is sold by the bag. Nominal inside diameter is listed as 2 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.