MasterSeal 590 - Fast setting mortar to plug active water leaks in concrete and masonry

How does MasterSeal 590 work?

MasterSeal 590 is a blend of hydraulic cements, well graded sands and additives supplied in dry powder form. It requires only the addition of clean water to produce a ready-to-use, ultra-rapid setting, plugging mortar.

Recommended uses:

  • Stops active water or seepage under pressure through joints, cracks and holes in concrete or masonry, where a normal mortar would be washed away and resin would not bond.
  • For sealing cracks and construction joints in reservoirs and other water-retaining structures.
  • For instant sewer connections.
  • For rapid anchoring of bolts, conduits, pipes, railings, sanitary equipment, etc.
  • Joint filling, pointing between concrete segments in concrete and brick tunnels, sewage systems, pipes and mines.

What makes MasterSeal 590 a unique solution?

MasterSeal 590 is:


  • Chloride-free, will not promote corrosion of reinforcement.
  • Expands as it sets to ensure a permanent watertight seal.
  • Mechanical characteristics similar to concrete.

Cost effective

  • Ultra-rapid setting for instant leak plugging.
  • Blocks water, no injection equipment required.

Easy to apply

  • Only to be mixed with water.

Environmentally friendly

  • Cement based, contains no toxic elements.

Product Information

Technical Data Sheet

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MasterSeal 590_TDS

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