Buna 70-254-Black-Pk10

SB-H70254-10 is an AS568-254 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 5.484 in (139.29 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.762 in (146.35 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Supplementary detail from the product record: 5.75IDX5.5"ODX.125"CS.

Expect good resistance to greases and lubricants, water, and petroleum-based oils. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across fluid power, agricultural equipment, and hydraulic and pneumatic systems.

Order part number SB-H70254-10, sold by the bag. Nominal inside diameter is listed as 5 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.