The H8.4X239.1 is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 239.1 mm (9.413 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 255.9 mm (10.07 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The compound resists greases and lubricants, propane and butane, and water. Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in automotive, agricultural equipment, and general industrial maintenance.
H8.4X239.1 ships individually. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description 8.4MM CS X 239.1MM ID BLACK BUNA 70D
Actual Outside Diameter 255.9 mm (10.07 inch)
Actual Cross Section 8.4 mm (0.331 inch)
Actual Inside Diameter 239.1 mm (9.413 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity