-439 BLACK CHEMOURS VITON 75D O-RING

APG stocks the VITON75439, an AS568-439 black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 6.475 in (164.47 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.025 in (178.44 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists chlorinated solvents, petroleum oils and fuels, and many acids. That behavior comes from the compound itself: Viton® (FKM) is specified for long service life in hot, chemically aggressive environments and outstanding high-temperature capability. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to amines or ketones and esters will shorten service life.

Common environments for this compound include chemical processing, high-temperature process equipment, and semiconductor equipment.

VITON75439 ships individually. Unit weight is approximately 38.05 g and nominal inside diameter is listed as 6 1/2 inch. 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.