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Tail Seal Brush

Product Highlights

The tail seal brush is a core component of the TBM tail sealing system, directly responsible for sealing performance. Its reliability is critical to slurry control, pressure stability, and operational safety at the shield tail.

Designed for high water pressure, severe abrasion, and long-term operation, Xinda tail seal brushes feature optimized brush geometry and material combinations, forming a stable and reliable sealing barrier throughout TBM advance.

Performance Advantages

Multi-layer brush design for redundant sealing

Multiple brush layers work together to form a continuous sealing interface, maintaining effective sealing even under localized wear.

Balanced wear resistance and flexibility for complex media

Brush materials combine abrasion resistance with elasticity, ensuring stable performance in slurry, water flow, and repeated friction without premature failure.

Stable operation with long-lasting sealing performance

Optimized brush length and arrangement prevent roll-over or displacement, delivering consistent sealing over long service periods.

Application & Compatibility

Xinda tail seal brushes are suitable for various shield machines and TBM tail sealing systems, compatible with different tail seal grooves and grease systems. They are widely used in metro, utility tunnels, water conservancy projects, and tunneling works.
Configurations can be customized based on shield structure, groundwater pressure, and geological conditions, supporting both new machine assembly and replacement for in-service equipment.