PROMASTOP®-AG is an acrylic-based, intumescent, single component fire stopping mastic with high expansion factor.

Further Information


  • Cables, combustible pipes and pipes with combustible insulation


  • Expands under pressure
  • Can be painted
  • Good adhesion to various substrates
Dry Density (g/cm³): 1.6g/cm³ (+/- 0.2g/cm³)
Wet Density (g/cm³): 1.5g/cm³ (+/- 0.2g/cm³)
Expansion pressure: 0.9N/mm²
Expansion ratio free: 1:13
Starting temperature: 150°C
Solid content: 84% (+/- 5%)
Colour: Grey
Shelf life: 12months
Storage conditions: Store in cool and dry conditions. Shelf life of original sealed containers at least for mentioned period.
Transport temperature: 3°C
Transport temperature Max: 35°C
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