BOSS® 333
Gap Filling Foam Gun Grade Technical Information Only


BOSS® 333
Gap Filling Foam Gun Grade Technical Information Only


A ready to use, multi-purpose, polyurethane foam that expands to three times its original volume upon contact with air.


  • Use for insulating around pipes, cables and blank openings, gaps and cracks
  • Weatherproofs against wind and moisture
  • Can be cut, sanded and painted


Technical Information