3.5MM CS X 28MM ID BLACK BUNA 70D

The H3.5X28 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 28 mm (1.102 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 35 mm (1.38 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against petroleum-based oils, propane and butane, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.

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

Reference part number H3.5X28 when ordering; the item is sold individually. Unit weight is approximately 1.23 g. Check the compound against your process media, pressure and temperature before committing to a design.