-345 BLACK FKM 75D O-RING

This o-ring is supplied in AS568-345 black Viton® (FKM) 75 Shore A built to an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm), catalogued under part number V70345. It delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against engine and transmission fluids, many acids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for very low compression set at elevated temperature and outstanding high-temperature capability. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Applications involving amines or low-molecular-weight organic acids call for a different compound.

It sees regular use in aerospace, high-temperature process equipment, and oil and gas.

Reference part number V70345 when ordering; the item is sold individually. Unit weight is approximately 13.801 g and nominal inside diameter is listed as 4 inch. Review your operating media and conditions against this specification before installation.