2.5MM CS X 77MM ID BLACK FKM 75D

The V2.5X77 is a black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 77 mm (3.031 in), a cross section of 2.5 mm (0.098 in), and an outside diameter of 82 mm (3.23 in). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

It resists chlorinated solvents, aromatic hydrocarbons, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is specified for long service life in hot, chemically aggressive environments and the industry benchmark where nitrile reaches its thermal limit. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Verify compatibility before use with low-molecular-weight organic acids or ketones and esters.

Maintenance and OEM teams specify it across aerospace, high-temperature process equipment, and oil and gas.

Reference part number V2.5X77 when ordering; the item is sold individually. Unit weight is approximately 2.2953 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.