Specific products and lubricants for slurry TBMs: sealants, protection pastes for the main bearing, greases, hydraulic fluids, bentonites and additives for backfill grouting.
Progressing through disparate geologies, sometimes with high permeabilities, slurry tunnel boring machines or hydroshields are subject to working pressures generally greater than 2 bar.
Sealing and lubricating products are therefore submitted to higher pressure and wash-out constraints. In consequence, the products used must be still more effective in order to resist these conditions.
CONDAT offers a complete range of specific products and lubricants for slurry tunnel boring machines.