This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 3.5 mm (0.138 in), a cross section of 3 mm (0.118 in), and an outside diameter of 9.5 mm (0.37 in), catalogued under part number H3X3.5. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. This material stands up to greases and lubricants, many alcohols, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to automotive brake fluid or polar solvents will shorten service life.
You will find this material specified across general industrial maintenance, fluid power, and automotive.
Order part number H3X3.5, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description 3MM CS X 3.5MM ID BLACK BUNA 70D
Actual Outside Diameter 9.5 mm (0.37 inch)
Actual Cross Section 3 mm (0.118 inch)
Actual Inside Diameter 3.5 mm (0.138 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity