John Deere 4668720 Center Joint Seal Kit

The 4668720 center joint seal kit is engineered to service the hydraulic rotary manifold (swivel joint) on compact excavators. It includes all necessary dynamic and static seals, O-rings, and backup rings to restore sealing integrity between the upper structure and undercarriage hydraulic circuits. Constructed from high-grade nitrile rubber (NBR) and PTFE compounds, the kit withstands hydraulic system pressures and operating temperatures typical in construction machinery applications. Direct replacement for John Deere OEM 4668720 and Hitachi OEM 4668720, cross-referencing to 4483644. Compatible with John Deere 17D, Hitachi ZX17U-2, and ZX17UNA-2 models equipped with Yanmar 3TNV70 engines.