1211605 Excavator Hydraulic Cylinder Seal Kit 121-1605 for CAT 365B 365C 385C Models" describes a hydraulic cylinder seal kit with the part number 1211605. This seal kit is specifically designed for excavators, particularly the CAT 365B, 365C, and 385C models. It includes the necessary seals and components required for proper sealing and maintenance of the hydraulic cylinders in these CAT excavator models. By using this seal kit, you can effectively address hydraulic cylinder issues, prevent leaks, and ensure optimal performance during excavating operations.