Plug Cement

VELOSIT PC 221 is a rapid setting cement with crystalline effect for concrete and masonry.

The product is used to waterproof water leakages, as an anchoring mortar and as an accelerator for other VELOSIT mortars. It is especially strong against negative side water pressure.

Typical applications:

  • Waterproofing of punctual water leakages for example in concrete pipes, water tanks and basement walls
  • Mortar for anchoring of starter bars, radiator mountings and similar
  • Repair mortar for small surface repairs
  • Set accelerator for VELOSIT-repair mortars


  • Minimal shrinkage/expansion under dry resp. wet curing conditions
  • Fast strength development with 12 MPa compressive strength after 1 hours and final strength of more than 50 MPa (7250 psi) after 28 days 
  • Resists 130 m (400 ft.) water pressure acc. to EN 12390-8
  • 1 min. working time
  • Ready to receive top coat after 10 min.
  • Ready for water pressure after a few minutes
  • Very good adhesion to concrete and masonry 
  • No cracking
  • No curing required
  • References


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