4MM CS X 70MM ID BLACK FKM 75D

V4X70 is a black Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 70 mm (2.756 in), a cross section of 4 mm (0.157 in), and an outside diameter of 78 mm (3.07 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists engine and transmission fluids, many acids, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) is known for very low compression set at elevated temperature and the industry benchmark where nitrile reaches its thermal limit. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Applications involving ketones and esters or hot water and steam call for a different compound.

Maintenance and OEM teams specify it across semiconductor equipment, automotive fuel systems, and oil and gas.

V4X70 ships individually. Unit weight is approximately 5.3062 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.