3MM CS X 89MM ID BLACK BUNA 70D

The H3X89 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 89 mm (3.504 in), a cross section of 3 mm (0.118 in), and an outside diameter of 95 mm (3.74 in). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to water, petroleum-based oils, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to automotive brake fluid or polar solvents will shorten service life.

Typical settings include general industrial maintenance, automotive, and agricultural equipment.

Reference part number H3X89 when ordering; the item is sold individually. Unit weight is approximately 2.54 g. 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.