PENTAFLEX® FTS pre-break elements are part of the established and reliable PENTAFLEX® joint sealing system designed for the construction of water-impermeable concrete structures (white tank). They are used for creating target ruptures in element walls and are designed for sealing vertical joints in prefabricated constructions. The FTS pre-break elements comprise a seam sheet with the tried-and-tested PENTAFLEX® special coating as well as a galvanised steel sheet wing. The wing weakens the concrete cross-section and also allows the flashing to be attached. The joint formed is simultaneously secured against pressing as well as non-pressing water by the integrated sealing element.


  • Watertight to 5.0 bar (2.0 bar in accordance with abP approval)
  • Standardised line visualises the anchoring depth of 30 mm
  • CE-marked product
  • Quick and easy fitting of the elements on the prefabricated element formwork
  • Reliable creation of the shrinkage rupture
  • Resistant to all organic effluent
  • Simple and reliable connection to the PENTAFLEX KB® seam sheets

Technical Details

  • General supervisory test certificate P-5120/231/09 MPA-BS
  • Galvanised steel sheet with special coating and standardised line
  • European Technical Assessment ETA-15/0003
  • CE-marked