2MM CS X 109MM ID BLACK BUNA 70D

APG stocks the H2X109, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 109 mm (4.291 in), a cross section of 2 mm (0.079 in), and an outside diameter of 113 mm (4.45 in). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to hydraulic fluids, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

You will find this material specified across hydraulic and pneumatic systems, general industrial maintenance, and fluid power.

Order part number H2X109, sold individually. Unit weight is approximately 1.3275 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.