5MM CS X 78MM ID BLACK BUNA 70D

APG stocks the H5X78, a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 78 mm (3.071 in), a cross section of 5 mm (0.197 in), and an outside diameter of 88 mm (3.46 in). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and low compression set under sustained load. Expect good resistance to hydraulic fluids, greases and lubricants, and propane and butane. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to polar solvents or ozone and direct sunlight will shorten service life.

Typical settings include automotive, construction equipment, and hydraulic and pneumatic systems.

Reference part number H5X78 when ordering; the item is sold individually. Unit weight is approximately 6.216 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.