Product Catalogue

TBM Consumables & Sealing Solutions

Precision sealing materials and soil conditioning products for shield boring machines — main bearing sealants, tail seal greases, and EPB foam agents.

01Product Categories

Sealing Materials & Soil Conditioning

Two product categories covering the full spectrum of TBM consumable requirements — engineered sealants for main bearing and tail brush systems, and soil conditioning foam for EPB face management.

TBM Sealing Materials
Sealing Systems
4 Products — Pump-type & Hand-applied

Engineered sealants for main bearing lip-seal systems and tail brush assemblies. Pump-type and hand-applied formulations resistant to grout, groundwater, and high-pressure soil — covering the full range of shield TBM configurations.

Main BearingTail SealPump-typeHand-appliedHigh Pressure
View Sealing Products ↓
Soil Conditioning
Foam Agents
CTR-ISF-C · CTR-ISF-D · CTR-ISF-P

EPB-grade foaming agents that reduce cutterhead torque, control face pressure, and improve muck rheology for smooth screw conveyor discharge. Three variants for standard, dispersive, and cohesive ground conditions.

BiodegradableWater SolubleEPB CompatibleFace Pressure Control
View Foam Agents ↓
TBM Sealing Materials

Sealing Materials

Engineered sealants for main bearing lip-seal and tail brush systems. Pump-type and hand-applied formulations resistant to grout, groundwater, and high-pressure soil ingress.
Model: CTR-MBS-P
Main Bearing Sealant
TBM Sealing · Pump-type

Clay-thickened lubricating grease for the lips sealing system of TBM main bearings. Contains solids, fibers and graphite to prevent ingress of soil, water and dust through the main bearing sealing.

AppearanceBlack fibrous paste
Density1.25±0.05 g/cm³
Flash Point≥220°C
Packaging: 25 / 70 / 230 kg drum
BiodegradableSelf-extinguishingHigh water resistance
View Details →
Model: CTR-TSG-P
Tail Seal Grease
TBM Sealing · Pump-type

Economical driving-grade tail sealant for shielded TBMs. Pumped into the tail sealing chamber to prevent water, soil and annulus grout from entering the TBM invert.

Density1.35±0.05 g/cm³
Water Seal35 bar — no leakage
Flash Point≥220°C
Packaging: 25 / 70 / 250 kg drum
High pressureFlame retardantAnti-washout
View Details →
Model: CTR-TSG-H
Tail Sealant Hand-coat
Shield Machine Consumable · Hand-applied

Dedicated first-fill sealant manually packed into the tail sealing brush to prevent synchronous grouting slurry and groundwater from infiltrating and causing brush hardening failure.

ColourWhite
Density1.30±0.05 g/cm³
Water Seal35 bar (Matsumura)
Application: Manual brush filling
Hand-appliedFlame retardantHigh cohesion
View Details →
Models: CTR-MBG-EP1 / CTR-MBG-EP2
Main Bearing Grease
Shield Machine Consumable · Pump-type

Eco-friendly sealant for the main bearing lip-seal system of shield boring machines. Distributed via centralised pump system. Biodegradable and non-toxic — zero groundwater or soil pollution.

AppearanceBlack homogeneous paste
Density1.25±0.05 g/cm³
Penetration230–280 (1/10mm)
Application: Centralised pump system
BiodegradableNon-toxicFlame retardant
View Details →
Soil Conditioning

Foam Agents

EPB-grade soil conditioning foam that reduces cutterhead torque, controls face permeability, and improves excavated muck flow through the screw conveyor. Biodegradable and water soluble.
IS Series · Foam Agents
Soil Conditioning · EPB Shield
IS Series Foam Agents
CTR-ISF-C · CTR-ISF-D · CTR-ISF-P

Three formulations of TBM soil conditioning foam for EPB shield machines. Creates temporary cohesion in excavated soil, reduces water permeability at the face, provides air cushion pressure compensation, and improves muck flow. All variants are biodegradable and completely water soluble. Choose between standard, dispersed (higher solids), and polymer-enhanced formulations based on ground conditions.

pH7.0–9.0 (all variants)
SolubilityCompletely water soluble
Biodeg.>80% in 28 days (CTR-ISF-C)
Packaging200 kg drum / 1,000 kg IBC
BiodegradableWater solubleEPB compatibleTorque reductionFace pressure control
View Full Comparison & Details →
CTR-ISF-C
Standard

Standard formulation for wet to sandy clay soils. Solid content 13.5–15.1%, expansion rate 8–25×, mix ratio 1.5–5%.

Details →
CTR-ISF-D
Dispersed

Higher solid content (19.4–21.4%) for dispersive ground. Improved stability in high-permeability soils.

Details →
CTR-ISF-P
Polymer

Polymer-enhanced formula for cohesive or mixed ground conditions. Improved foam structure and soil integration.

Details →

Need Technical Advice for Your TBM Project?

Our engineering team will review your ground conditions, TBM specifications, and project requirements to recommend the optimal product selection and application parameters.

Request Technical Advice Our Services