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
uf_description2 METRIC O-RING
Actual_OD 255.9 mm (10.07 inch)
Actual_CS 8.4 mm (0.331 inch)
Actual_ID 239.1 mm (9.413 inch)
ProductCode Description O-Rings - Metric - Commodity