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Drilling Fluid Additives

Enhance drilling efficiency & decrease costs


TSG DRIVE® is a tail seal grease for shielded TBMs. It protects the wire brushes and maintains a tight tail seal during tunnel excavation. It is a viscous material that acts as a barrier to water, mortar and soil. It is specifically formulated to resist washout from high water and ground pressures and adheres to all surfaces.

Primary Application

Tail sealant in tunnel excavation

Efficiently seals gap between concrete segments and shield

Properly fills interbrush chambers

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  • Excellent sealing properties

  • Excellent pumping properties - Uniform filling of the chambers.

  • Environmentally friendly - Biodegradable, no harmful pollution.

  • Excellent adhesion to all surfaces - Resistant to high water and ground pressure

  • Stable protective film - Prolonged life span of wire brushes.

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