-026 BLACK BUNA 70D O-RING

Ordered as H70026, this is an AS568-026 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 1.239 in (31.47 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.379 in (35.03 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists water, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across hydraulic and pneumatic systems, fluid power, and construction equipment.

This item is sold individually under part number H70026. Unit weight is approximately 0.323 g. Check the compound against your process media, pressure and temperature before committing to a design.