8.4MM CS X 129.1MM ID BLACK FKM 70D

This o-ring is supplied in black Viton® (FKM) 70 Shore A measuring an inside diameter of 129.1 mm (5.083 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 145.9 mm (5.74 in), catalogued under part number V8.4X129.1. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Viton® (FKM) is specified here for very low compression set at elevated temperature and industry benchmark where nitrile reaches its thermal limit. Expect good resistance to petroleum oils and fuels, aromatic hydrocarbons, and aggressive chemicals. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with ketones and esters or amines.

You will find this material specified across aerospace, semiconductor equipment, and chemical processing.

V8.4X129.1 ships individually. 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.