Caterpillar 1540757 Bucket Cylinder Seal Kit

This hydraulic cylinder seal kit is designed for the bucket cylinder of Caterpillar 322B and 322B L track-type excavators (serial 8MR00001-UP) powered by the 3116 diesel engine. The kit services cylinders with a 100 mm rod diameter and 140 mm bore diameter, corresponding to cylinder assembly 118-4176. The seal kit includes rod seals, piston seals, buffer seals, wear rings, and O-rings manufactured from nitrile rubber (NBR), polytetrafluoroethylene (PTFE), and polyurethane (PU) to withstand high-pressure hydraulic systems and extreme operating temperatures. It meets or exceeds OEM specifications for dimensional accuracy and material durability, ensuring reliable sealing performance in heavy-duty excavation applications.