-439 BLUE FKM 75D O-RING

This o-ring is supplied in AS568-439 blue Viton® (FKM) 75 Shore A measuring 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 V75MD439. It compresses into its gland to block fluid or gas migration across a joint.

Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. It resists aromatic hydrocarbons, chlorinated solvents, and aggressive chemicals. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving hot water and steam or low-molecular-weight organic acids call for a different compound.

The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. You will find this material specified across high-temperature process equipment, automotive fuel systems, and chemical processing.

Stocked as V75MD439 and sold individually. Nominal inside diameter is listed as 6 1/2 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.