3MM CS X 128MM ID BLACK BUNA 70D

Ordered as H3X128, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 128 mm (5.039 in), a cross section of 3 mm (0.118 in), and an outside diameter of 134 mm (5.28 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against many alcohols, propane and butane, and greases and lubricants. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, 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). Applications involving automotive brake fluid or strong acids call for a different compound.

Typical settings include automotive, hydraulic and pneumatic systems, and general industrial maintenance.

This item is sold individually under part number H3X128. Unit weight is approximately 3.72 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.