BOSS® 339 Black Gap Filling Foam

This is a one-component, self-expanding, ready to use polyurethane foam; It won’t discolor if exposed to UV radiation which eliminates the need for painting.

  • High thermal and acoustical insulation
  • Excellent adhesion on most substrates (except Teflon, PE and PP)
  • Minimal expansion - Less mess
  • CFC propellant free
  • VOC compliant

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