840 B2 Fire Rated PU Foam

Akfix 840 is a self-extinguishable aerosol polyurethane foam for filling, sealing and bonding gaps. It is designed for easy dispensing through the straw adapter included to each can.




  • Rated B2 according to DIN 4102.
  • Excellent adhesion to most building materials.
  • It does not contain any propellant gases that are harmful to the ozone layer.
  • It can be painted after curing.
  • It can be cut and sawn.
Application Areas

  • Fixing and insulating door and window frames.
  • Filling and sealing of gaps, joints, and cavities.
  • Filling of penetrations in walls.
  • Insulating electrical outlets and water pipes.


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