4MM CS X 39MM ID BLACK FKM 75D

Ordered as V4X39, this is a black Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 39 mm (1.535 in), a cross section of 4 mm (0.157 in), and an outside diameter of 47 mm (1.85 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to aromatic hydrocarbons, many acids, and aggressive chemicals. Viton® (FKM) offers the industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving amines or ketones and esters call for a different compound.

Maintenance and OEM teams specify it across semiconductor equipment, aerospace, and high-temperature process equipment.

V4X39 ships individually. Unit weight is approximately 3.1097 g. Check the compound against your process media, pressure and temperature before committing to a design.