​MasterRoc TSG 7 - Tail sealant for shielded tunnel boring machines (TBM)


How does MasterRoc TSG 7 work?

MasterRoc TSG 7 tail-shield sealant is used for shielded tunnel boring machines (TBMs). MasterRoc TSG 7 sealant effectively seals the gap between the shield and concrete segments to prevent the ingress of soil, water or grout.

MasterRoc TSG 7 sealant is formulated as a “first fill” product to resist water and ground pressures and not break down under high mechanical pressures. After the initial “first fill” application, the use of pumpable grades such as MasterRoc TSG 6 sealant are required to ensure effective TBM tail shield protection. MasterRoc TSG 7 sealant has excellent pumping properties and adhesion on most surfaces.

Recommended for use in:

  • Tunneling with shielded TBMs

What are the unique features of MasterRoc TSG 7?

  • Excellent pumping properties
  • Excellent sealing properties
  • Adheres to most metal or concrete surfaces

What are the benefits of MasterRoc TSG 7?

  • Prevents the ingress of soil, water or grout into shielded TBMs

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