Buna 70-048-Black-Pk2

SB-H70048-2 is an AS568-048 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.739 in (120.37 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 4.879 in (123.93 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope. Source specification: 0.070CSX4.739"IDX4.879"OD.

Expect good resistance to hydraulic fluids, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or automotive brake fluid.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and fluid power.

Stocked as SB-H70048-2 and sold by the bag. Application requirements vary, so validate compatibility with your process conditions prior to installation.