Buna 70-347-Black-Pk5

APG stocks the SB-H70347-5, an AS568-347 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.225 in (107.32 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.645 in (117.98 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: 4.625IDX4.25"ODX.1875"CS.

As a material, Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to petroleum-based oils, many alcohols, and propane and butane. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in polar solvents or automotive brake fluid.

Typical settings include fluid power, hydraulic and pneumatic systems, and agricultural equipment.

This item is sold by the bag under part number SB-H70347-5. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.