Uses in Static applications and in Dynamic applications such as Pump Shafts and Hydraulic Cylinder Pistons where there is relative motion between parts and the o-ring. Are used on Automotive and Industrial machinery components, electronic instruments, electrical applicances, washroom facilities, faucets, etc. Our engineered o-ring compounds are designed to perform in a wide range of applications with varying chemical exposures, pressures and temperatures. Also replacement for Landon SS Tank O-ring . Inner Diameter: 247.02mm, Outer Diameter: 257.68mm, Width: 5.33mm