Komatsu 703-08-95620 Swivel Joint Seal Kit Assembly

This swivel joint seal kit is engineered to restore hydraulic integrity of the center joint (rotary manifold) on Komatsu PC75 series excavators. The center joint channels hydraulic fluid to the travel motors while allowing continuous rotation between the upper structure and undercarriage. The kit includes precision-molded piston seals, rod seals, dust seals, and backup rings manufactured to OEM material specifications for compatibility with mineral-based hydraulic oils. Designed for direct replacement during scheduled overhaul or emergency repair of oil leakage at the swivel joint. The sealing elements withstand high-pressure hydraulic circuits typical in 7.5-ton class excavator travel systems. Proper installation requires thorough cleaning of seal grooves and lubrication with clean hydraulic fluid to prevent damage during assembly. Compatible with PC75UU-3, PC75UD, PC75US, and PC75-6 model variants.