Buna 70-330-Black-Pk50

This o-ring is supplied in AS568-330 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 2.1 in (53.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.52 in (64.01 mm), catalogued under part number SB-H70330-50. It delivers dependable bidirectional sealing in a compact groove envelope. Additional detail on this item: 2.5IDX2.125"ODX.1875"CS.

It resists hydraulic fluids, many alcohols, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with polar solvents or ketones.

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

This item is sold by the bag under part number SB-H70330-50. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.