2.5MM CS X 66MM ID BLACK FKM 75D

Ordered as V2.5X66, this is a black Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 66 mm (2.598 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 71 mm (2.8 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to petroleum oils and fuels, engine and transmission fluids, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) is known for very low compression set at elevated temperature 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). It should not be specified for service in amines or ketones and esters.

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

Reference part number V2.5X66 when ordering; the item is sold individually. Unit weight is approximately 1.9563 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.