Buna 70-229-Black-Pk100

Part number SB-H70229-100 is an AS568-229 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.359 in (59.92 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.637 in (66.98 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. The catalog record notes: 2.625IDX2.375"ODX.125"CS.

Expect good resistance to many alcohols, water, and petroleum-based oils. Buna-N (Nitrile) is valued for low compression set under sustained load, reliable performance in both static and dynamic service. 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 automotive brake fluid or ketones.

It sees regular use in agricultural equipment, fluid power, and hydraulic and pneumatic systems.

Order part number SB-H70229-100, sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.