Buna 70-038-Black-Pk10

APG stocks the SB-H70038-10, an AS568-038 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope. Supplementary detail from the product record: 0.070CSX2.614"IDX2.754"OD.

Expect good resistance to petroleum-based oils, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and fluid power.

Order part number SB-H70038-10, sold by the bag. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.