1.78MM CS X 135.76MM ID BLACK FKM 75D

Part number V1.78X135.76 is a black Viton® (FKM) 75 Shore A O-Ring supplied with an inside diameter of 135.76 mm (5.345 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 139.32 mm (5.49 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to engine and transmission fluids, petroleum oils and fuels, and aggressive chemicals. Viton® (FKM) is widely chosen for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. 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.

You will find this material specified across automotive fuel systems, chemical processing, and semiconductor equipment.

Reference part number V1.78X135.76 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.