Reusable Safety Valve Foam

Selsil Reusable Safety Valve Foam is a one-component, polyurethane-based filling and insulation material cured by air humidity.


  • One component.
  • Cured by air humidity.
  • Excellent adherance to most construction materials such as wood, concrete, roofing tiles, metal, aluminium (except for polyethylene, silicone, and Teflon).
  • Insulates against sound and heat.
  • Cuttable and paintable when cured.
  • Exceptionally good filling (expansion) capacity.
  • Can be closed off with a safety valve after use, so that it can be used again even weeks later by opening the valve.


Chemical Base Polyurethane
Curing Mechanism Atmospheric Moisture
Specific Gravity 23±3 kg/m3 (ASTM D1622)
Tack Free Time (L 1 cm) 8-10 min. (AST C1622)
Cutting Time (L 1 cm) 20-25 min. (ASTM C1620)
Fire Class B3 (DIN 4102-1)
Compression Strength 43,8 kPa (DIN 53421)
Tensile Strength 80 kPa (SO1926-79)
Yield 30-45 L (ASTM C1536)
Dimensional Stability <-5 % (ISO2796/86)
Optimum Application Temperature min. 20°C max. +25°C
Temperature Resistance (cured) -30°C to +80°C
Application Temperature 5°C to +35°C

Application Details
Selfoam Plus PU Foam;

Used to fix and assemble door and window frames,
Fill gaps and cavities,
As a filler in all roof constructions,
In sound and heat insulation systems.

Storage is 12 months when stored at +5ºC/41ºF to +25ºC/77ºF.