3MM CS X 4MM ID BLACK BUNA 70D

Ordered as H3X4, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 4 mm (0.157 in), a cross section of 3 mm (0.118 in), and an outside diameter of 10 mm (0.39 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. It resists propane and butane, hydraulic fluids, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ozone and direct sunlight or polar solvents call for a different compound.

Common environments for this compound include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.

H3X4 ships individually. Unit weight is approximately 0.193 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.