MasterSeal 590 is a fast setting mortar to plug active water leaks in concrete and masonry


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, ultrarapid setting, plugging mortar. 

Where is MasterSeal 590 fast setting mortar applied?

  • 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 are the advantages of MasterSeal 590?


  • 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

Technical Data Sheet Chinese


MasterSeal 590 SDS

pdf (114,03 Kb)

MasterSeal 590_TDS

pdf (42,29 Kb)