Sany 60306104 Swivel Joint Seal Kit Assembly

This swivel joint seal kit is engineered for the central rotary joint assembly on Sany SY55 series hydraulic excavators. The kit comprises precision-molded sealing elements manufactured from steel-reinforced rubber, polyurethane (PU), polytetrafluoroethylene (PTFE), nitrile rubber (NBR), and hydrogenated nitrile rubber (HNBR) to withstand high-pressure hydraulic fluid environments. The seal kit restores hydraulic circuit integrity between the upper structure and undercarriage, preventing hydraulic oil leakage during 360-degree rotation. Each component meets OEM dimensional tolerances for direct installation without modification. The kit addresses wear-induced leakage in the swivel joint manifold, ensuring stable hydraulic flow to track motors and auxiliary circuits.