-121 BLACK FKM 90D O-RING

V90121 is an AS568-121 black Viton® (FKM) 90 Shore A O-Ring built to 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). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Viton® (FKM) delivers excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. This material stands up to many acids, petroleum oils and fuels, and chlorinated solvents. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Exposure to ketones and esters or low-molecular-weight organic acids will shorten service life.

You will find this material specified across aerospace, chemical processing, and automotive fuel systems.

Order part number V90121, sold individually. Unit weight is approximately 0.946 g and nominal inside diameter is listed as 1 1/16 inch. Check the compound against your process media, pressure and temperature before committing to a design.