A: Common failure indicators include hydraulic oil leaking from the undercarriage track frame, unprovoked track drifting while driving straight, a noticeable loss of travel power on one side, or hydraulic oil mixing into the gear oil box. Replacing the seal group immediately prevents internal pressure bypass and avoids expensive scoring of the center joint spindle.
A: The central joint housing and spindle must be thoroughly cleaned and inspected for scratches or burrs before installation. All seals should be lubricated with clean hydraulic oil prior to assembly. Avoid using sharp tools that could nick the PTFE components, and ensure the rotary seals are facing the correct pressure direction to maintain a tight hydrodynamic barrier.
A: Cross-reference your machine serial number prefix and the hydraulic swivel joint part number with the OEM catalog. The 162-4694 kit is specifically engineered for medium to large excavator series, including models 320, 320GC, 330, and 336. Providing your exact equipment prefix to our sales team ensures a 100% accurate application match before bulk shipping.
A: This kit utilizes high-grade polyurethane and specialized PTFE compounds designed to withstand continuous pressure spikes up to 35 MPa and abrasive stone dust. The materials resist thermal degradation during prolonged high-load operations, preventing hardening or cracking, which ensures long-term sealing stability in severe mining and demolition environments.
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companie





















