Buna 70-138-Black-Pk10

Part number SB-H70138-10 is an AS568-138 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.112 in (53.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.318 in (58.88 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint. Supplementary detail from the product record: 0.103CSX2.112"IDX2.318"OD.

Buna-N (Nitrile) is widely chosen for low compression set under sustained load and an economical choice for high-volume maintenance programs. The material holds up against water, many alcohols, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Verify compatibility before use with strong acids or polar solvents.

It sees regular use in general industrial maintenance, construction equipment, and hydraulic and pneumatic systems.

Order part number SB-H70138-10, sold by the bag. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.