Krystol Plug Rapid Setting Hydraulic Cement

Krystol Plug™

A rapid-setting hydraulic cement that can be used to plug the flow of water through concrete cracks.

Krystol Plug™ is a rapid-setting hydraulic cement that can be used to plug the flow of water through concrete cracks. Krystol plug is different from other water-plugs. Krystol plug is a high-strength crystalline enriched material with an incredible ability to stop active water and an incredible ability to stop active water and resist significant hydrostatic pressure.

How It Works

Krystol Plug™ is mixed with water and immediately, and firmly, pressed into a prepared chase to stop flowing water. After stopping the water, Krystol Repair Grout is used to introduce Krystol technology to the leak repair. When applied to concrete, Krystol chemically reacts with water and un-hydrated cement particles to form insoluble needle-shaped crystals that fill capillary pores and micro-cracks in the concrete and block the pathways for water and waterborne contaminants. Any moisture introduced over the lifespan of the concrete will initiate crystallization, ensuring permanent waterproofing protection.

Product Benefits

  • Stops flowing water immediately
  • Sets quickly, within one to two minutes
  • Easy to mix and apply
  • Will set up and harden under water
  • After setting, expands to improve sealing
  • Has exceptional structural strength
  • Non-toxic, non-metallic and contains no calcium
  • Safe for drinking water applications


Krystol Plug™ is used as part of the Krystol Leak Repair System to permanently repair concrete cracks and leaks for existing construction projects. Components of our system can be used to:

  • Repair leaking cracks or construction joints
  • Seal around pipes and metal fixtures in masonry concrete
  • Repair spalled or honeycombed concrete
  • Seal construction form tie holes
  • Fix chipped columns
  • Fix uneven marks
  • Repair damaged concrete elements

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