-389 BLACK CHEMOURS VITON 75D O-RING

APG stocks the VITON75389, an AS568-389 black Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 19.953 in (506.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 20.373 in (517.47 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. The material holds up against engine and transmission fluids, chlorinated solvents, and many acids. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in ketones and esters or hot water and steam.

Common environments for this compound include aerospace, automotive fuel systems, and chemical processing.

Stocked as VITON75389 and sold individually. Unit weight is approximately 64.7 g and nominal inside diameter is listed as 20 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.