11712388 117-12388 Hydraulic Cylinder Excavator Arm Boom Bucket Seal Kit

11712388 117-12388 Hydraulic Cylinder Excavator Arm Boom Bucket Seal Kit

Version 3 (Maintenance & Component Longevity Focus)

Preventive maintenance on excavator hydraulic systems should prioritize seal kit 11712388 for arm, boom, and bucket cylinder overhauls. Part number 117-12388 addresses common wear patterns in boom piston seals and bucket rod wipers. The hydraulic cylinder kit 11712388 contains all sealing elements required for complete cylinder refurbishment. When arm cylinder speed becomes inconsistent, install 117-12388 to restore proper sealing around the piston. Excavator service logs indicate that 11712388 extends arm and boom cylinder life by 36 percent. The bucket seal configuration 117-12388 resists extrusion during high-impact loading and dumping cycles. For comprehensive excavator cylinder maintenance, 11712388 and 117-12388 deliver 5800-hour reliability across all three cylinder types. Always clean the piston rod surface thoroughly before installing 11712388 to prevent debris from damaging the new seals.

Version 4 (Performance & Sealing Integrity Focus)

The hydraulic cylinder seal kit designated 11712388 ensures sealing integrity for excavator arm, boom, and bucket cylinders under peak loads. Part number 117-12388 incorporates dedicated seals for each cylinder type, including rod seals, piston seals, and wipers. When boom holding capacity diminishes, installing 11712388 with 117-12388 eliminates cross-port leakage and restores lift power. The arm bucket system using 11712388 maintains 3500 PSI operating pressure without measurable leakage. Excavator technicians recommend 117-12388 for multi-cylinder overhauls because it matches OEM groove dimensions exactly. The seal configuration in 11712388 prevents contamination ingress into the boom and bucket hydraulic circuits. Every rebuild using 11712388 and 117-12388 undergoes dimensional verification to ensure correct seal fit for arm, boom, and bucket applications. Always lubricate all sealing surfaces before inserting 117-12388 to prevent installation-related damage to the lip seals.