Product Introduction

The shield tail sealing brush is one of the key components of a tunnel boring machine (TBM). Its core function is to, during the TBM excavation process,

A continuous, flexible, and reliable sealing barrier is formed between the shield tail shell and the tunnel segment.

Prevent external water, soil, grouting slurry, and other materials from entering the tunnel interior, ensuring construction safety, efficiency, and the stability of the tunnel structure.

We fully understand the uniqueness of each project, which is why we offer comprehensive customized services tailored to your shield machine model, geological conditions, and specific requirements.

We offer the most suitable sealing brush solutions in terms of wear resistance, compressive strength, and sealing reliability.

Our products have been widely used in urban subways, railway and highway tunnels, cross-sea and cross-river tunnels, municipal utility tunnels, hydraulic engineering projects, and other fields. Our customers are located in major cities across China.

It is also exported to global markets including the Americas, Europe, Southeast Asia, and the Middle East, and has established strong partnerships with numerous large construction groups and tunnel-boring machine manufacturers.

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Customized products for your project.

Safeguard every meter of excavation in critical projects with proven, reliable technology.

Main features

High rigidity and excellent wear resistance: Made by layering multiple spring steel plates using special techniques (such as symmetrical interleaving), it is highly resistant to wear and boasts a long service life.
Good elasticity: The spring steel material can recover its deformation after being compressed, ensuring close contact with the tunnel segment.

Core features

It primarily relies on the stacking of multi-layer spring steel plates to provide a rigid seal with outstanding wear resistance, effectively preventing hard gravel and solidified slurry blocks from penetrating.

Applicable operating conditions

Particularly suitable for hard rock formations, highly abrasive gravel layers, or working conditions with extremely high wear resistance requirements over long tunneling distances. It is also commonly used as the final sealing layer or as an emergency seal when the shield tail brushes show signs of wear.

Steel plate brush

Specification Model: 200*115*250*30 Applicable Models: China Railway Equipment, China Railway Construction Heavy Industry, CCCC Tianhe Description: Applied as the final step.
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