-243 BROWN FKM 75D O-RING

The VB75243 is an AS568-243 brown Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

It resists engine and transmission fluids, many acids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) is specified for outstanding high-temperature capability and long service life in hot, chemically aggressive environments. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Verify compatibility before use with low-molecular-weight organic acids or hot water and steam.

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

Stocked as VB75243 and sold individually. Unit weight is approximately 7.035 g and nominal inside diameter is listed as 4 1/8 inch. 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.