2MM CS X 3.5MM ID BLACK BUNA 70D

Ordered as H2X3.5, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.5 mm (0.138 in), a cross section of 2 mm (0.079 in), and an outside diameter of 7.5 mm (0.3 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to hydraulic fluids, water, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) offers low compression set under sustained load, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to automotive brake fluid or ozone and direct sunlight will shorten service life.

It sees regular use in construction equipment, general industrial maintenance, and agricultural equipment.

H2X3.5 ships individually. Unit weight is approximately 0.0679 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.