5MM CS X 400MM ID BLACK BUNA 70D

H5X400 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 400 mm (15.748 in), a cross section of 5 mm (0.197 in), and an outside diameter of 410 mm (16.14 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to greases and lubricants, hydraulic fluids, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ketones will shorten service life.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and agricultural equipment.

H5X400 ships individually. Unit weight is approximately 30.539 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.