-121 BLACK FKM 75D O-RING

The V70121 is an AS568-121 black Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 1.049 in (26.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.255 in (31.88 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Viton® (FKM) is known for long service life in hot, chemically aggressive environments and the industry benchmark where nitrile reaches its thermal limit. The compound resists engine and transmission fluids, aromatic hydrocarbons, and petroleum oils and fuels. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Exposure to amines or ketones and esters will shorten service life.

Common environments for this compound include high-temperature process equipment, aerospace, and automotive fuel systems.

Stocked as V70121 and sold individually. Unit weight is approximately 0.913 g and nominal inside diameter is listed as 1 1/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.