3MM CS X 26.5MM ID BLACK BUNA 70D

APG stocks the H3X26.5, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 26.5 mm (1.043 in), a cross section of 3 mm (0.118 in), and an outside diameter of 32.5 mm (1.28 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is widely chosen for low compression set under sustained load, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, greases and lubricants, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

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

H3X26.5 ships individually. Unit weight is approximately 0.8273 g. 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.