... outer diameter is from 45-1425mm7,Our floating seals are used in construction machinery and mining machinery , like komatsu,cat hitachi ... , D7G, D8K, D9L, D10H;(3)Germany hydraulic excavator R902-R992American CAT hydraulic excavators Japanese Komatsu hydraulic excavators; (4)Various loaders and land levelers ... :Linda wang Mobile +86-15933963585 floating seals for American CAT hydraulic excavators