4MM CS X 390MM ID BLACK FKM 75D

Ordered as V4X390, this is a black Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 390 mm (15.354 in), a cross section of 4 mm (0.157 in), and an outside diameter of 398 mm (15.67 in). The o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The compound resists petroleum oils and fuels, aggressive chemicals, and aromatic hydrocarbons. Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in hot water and steam or ketones and esters.

You will find this material specified across automotive fuel systems, high-temperature process equipment, and oil and gas.

Reference part number V4X390 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.