3.5MM CS X 18MM ID BLACK BUNA 70D

H3.5X18 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 18 mm (0.709 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 25 mm (0.98 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 water, propane and butane, and hydraulic fluids. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

Typical settings include general industrial maintenance, automotive, and fluid power.

Stocked as H3.5X18 and sold individually. Unit weight is approximately 0.789 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.