8.4MM CS X 254.5MM ID BLACK FKM 70D

APG stocks the V8.4X254.5, a black Viton® (FKM) 70 Shore A O-Ring measuring an inside diameter of 254.5 mm (10.02 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 271.3 mm (10.68 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Additional detail on this item: Metric O-RING, JIS P255.

Viton® (FKM) is specified here for excellent resistance to compression set and permeation, industry benchmark where nitrile reaches its thermal limit. It resists engine and transmission fluids, many acids, and aromatic hydrocarbons. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or ketones and esters will shorten service life.

It sees regular use in oil and gas, high-temperature process equipment, and chemical processing.

Stocked as V8.4X254.5 and sold individually. Unit weight is approximately 84.852 g. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.