-439 BLACK FKM 90D O-RING

This o-ring is supplied in AS568-439 black Viton® (FKM) 90 Shore A with an inside diameter of 6.475 in (164.47 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 7.025 in (178.44 mm), catalogued under part number V90439. It creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to aggressive chemicals, many acids, and engine and transmission fluids. Viton® (FKM) is valued for long service life in hot, chemically aggressive environments and outstanding high-temperature capability. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or ketones and esters will shorten service life.

You will find this material specified across semiconductor equipment, aerospace, and automotive fuel systems.

This item is sold individually under part number V90439. Unit weight is approximately 38.3 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.