5.3MM CS X 345MM ID BLACK BUNA 70D

The H5.3X345 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 345 mm (13.583 in), a cross section of 5.3 mm (0.209 in), and an outside diameter of 355.6 mm (14 in). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material holds up against greases and lubricants, many alcohols, and propane and butane. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or strong acids are present.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, fluid power, and automotive.

Stocked as H5.3X345 and sold individually. Unit weight is approximately 30.179 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.