-257 BLACK FKM 75D O-RING

This o-ring is supplied in AS568-257 black Viton® (FKM) 75 Shore A supplied with an inside diameter of 5.859 in (148.82 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.137 in (155.88 mm), catalogued under part number V75257. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against engine and transmission fluids, chlorinated solvents, and many acids. Viton® (FKM) is valued for excellent resistance to compression set and permeation, the industry benchmark where nitrile reaches its thermal limit. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C).

Common environments for this compound include chemical processing, oil and gas, and automotive fuel systems.

Reference part number V75257 when ordering; the item is sold individually. Unit weight is approximately 8.6748 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.