-343 BLUE FKM 75D O-RING

This o-ring is supplied in AS568-343 blue Viton® (FKM) 75 Shore A supplied with an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm), catalogued under part number V75MD343. It remains the most cost-effective sealing element available for pressurized assemblies.

As a material, Viton® (FKM) is valued for outstanding high-temperature capability and long service life in hot, chemically aggressive environments. Expect good resistance to many acids, engine and transmission fluids, and chlorinated solvents. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with low-molecular-weight organic acids or ketones and esters.

The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across oil and gas, automotive fuel systems, and aerospace.

Order part number V75MD343, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.