2.5MM CS X 85MM ID BLACK BUNA 70D

H2.5X85 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 85 mm (3.346 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 90 mm (3.54 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against hydraulic fluids, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Typical settings include construction equipment, hydraulic and pneumatic systems, and general industrial maintenance.

H2.5X85 ships individually. Unit weight is approximately 1.65 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.