-318 BROWN FKM 90D O-RING

VB90318 is an AS568-318 brown Viton® (FKM) 90 Shore A O-Ring built to an inside diameter of 0.975 in (24.77 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.395 in (35.43 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to chlorinated solvents, petroleum oils and fuels, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Exposure to hot water and steam or ketones and esters will shorten service life.

You will find this material specified across semiconductor equipment, automotive fuel systems, and high-temperature process equipment.

VB90318 ships individually. Nominal inside diameter is listed as 1 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.