BOSS® 334

Windows & Doors Minimal Expamding Gun Foam

BOSS® 334 is a one-component, minimal expanding ready to use polyurethane foam. It is fitted with a plastic adaptor head for use with a foam applicator gun. It contains CFC-free propellants, which are completely harmless to the ozone layer.


  • Low expansion.

  • Excellent adhesion on most building materials (except Teflon, PE and PP).

  • High thermal and acoustic insulation, very good filling capabilities.

  • Excellent mounting capabilities and stability (no shrink or post expansion).




  • Technical Data Sheet

        Typical Application