-378 BLACK FKM 90D O-RING

This o-ring is supplied in AS568-378 black Viton® (FKM) 90 Shore A built to an inside diameter of 10.475 in (266.07 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.895 in (276.73 mm), catalogued under part number V90378. It compresses into its gland to block fluid or gas migration across a joint.

As a material, Viton® (FKM) is widely chosen for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. It resists engine and transmission fluids, aggressive chemicals, and many acids. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). It is not the right choice where hot water and steam or low-molecular-weight organic acids are present.

It sees regular use in automotive fuel systems, high-temperature process equipment, and oil and gas.

This item is sold individually under part number V90378. Unit weight is approximately 34.4699 g and nominal inside diameter is listed as 10 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.