mcr Dunaseal – fire-proof sealing tape

European Technical Approval ETA-18/0475

Certificate of Constancy of Performance: 1488-CPR-0678/W

Declaration of Performance: 81400


Fire resistance class up to EI 120.


The mcr Dunaseal sealing unit is designed for fire sealing  construction gaps and expansion joints with a nominal width of 10÷100 mm. It permits up to 50% movement of parts.

The mcr Dunaseal sealing unit consists of foamed polyurethane layers coated with fireproofing intumescent laminate strips, which expands during a fire, thus creating a fire barrier by filling construction gaps and expansion joints. The placement of the unit in a gap quickly and effectively establishes a fire protecting sealing in a wall, ceiling or at the junction of two construction components.


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  • the tape is highly elastic, allowing for independent movement of structure elements, while maintaining full tightness
  • very quick and easy installation

Technical data are available in the folder.

  • Production halls and warehouses
  • Logistics centers
  • Public buildings
  • Commercial buildings
  • Residential buildings

Barrier thicknesses (minimum):

  • 120 mm – concrete walls
  • 125 mm – drywalls
  • 150 mm – full brick and cellular concrete walls
  • 150 mm – reinforced concrete and cellular concrete ceilings