MasterRoc® TSG 7 — First Fill Tail Sealant for Shielded Tunnel Boring Machines (TBM)

Formerly MEYCO TSG 7

What is MasterRoc TSG 7?

MasterRoc TSG 7 is a tail sealant for shielded tunnel boring machines. It effectively seals the gap between the shield and concrete segments to prevent the ingress of water, grout and soil. It is formulated to resist high water and grout pressures, and has excellent adhesion to all types of surfaces. It is designed as a first fill sealant.

Fields of application

Tunnelling with shielded TBMs equipped with a brush seal system.

Features and benefits

  • Excellent sealing properties
  • Excellent adhesion to any metal or concrete surfaces
  • Good pumping properties if pumping system is moved close to the application location


MasterRoc TSG 7: Technical Data Sheet (December 2015)

pdf (165.70 Kb)