3MM CS X 86MM ID BLACK BUNA 70D

Ordered as H3X86, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 86 mm (3.386 in), a cross section of 3 mm (0.118 in), and an outside diameter of 92 mm (3.62 in). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, propane and butane, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and low compression set under sustained load. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or strong acids are present.

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

H3X86 ships individually. Unit weight is approximately 2.4137 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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.