Caterpillar E311 Swing Motor Seal Kit

This hydraulic seal kit is engineered for the swing motor assembly on Caterpillar E311 series hydraulic excavators. It includes all necessary seals for the hydraulic motor's rotating group and shaft, manufactured to OEM dimensions using high-grade nitrile rubber and PTFE materials. The kit ensures reliable sealing performance under high operating pressures up to 35 MPa and temperature ranges from -40°C to 120°C. Direct replacement for swing motor models SG04E and MFB80 used in E311, E311B, E311C, and E312 excavators. Restores motor efficiency and prevents hydraulic fluid contamination.