1.2MM CS X 40MM ID BLACK BUNA 70D

Ordered as H1.2X40, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 40 mm (1.575 in), a cross section of 1.2 mm (0.047 in), and an outside diameter of 42.4 mm (1.67 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists propane and butane, greases and lubricants, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.

Typical settings include agricultural equipment, automotive, and hydraulic and pneumatic systems.

H1.2X40 ships individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.