-048 BLACK BUNA 70D O-RING

The H70048 is an AS568-048 black Buna-N (Nitrile) 70 Shore A O-Ring with 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). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against propane and butane, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for reliable performance in both static and dynamic service, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound.

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

Stocked as H70048 and sold individually. Unit weight is approximately 0.0013 g and nominal inside diameter is listed as 4 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.