Effective Fire Resistance in a Convenient Tape StripDuring a fire, its vital that doors, frames and fire-resistant glass are properly sealed to help prevent the spread of flames, smoke and noxious gasses. 3M Expantrol Flexible Intumescent Strip E-FIS is an excellent solution: an intumescent adhesive strip, tested for tensile strength according to ASTM D 412-83, is conformable, flexible and easy to apply. This convenient rolled strip can be easily cut to fit a range of applications without special tools, saving time and money. The re-enterable adherent surface supports material that is designed to expand when exposed to intense heat effectively sealing the gaps in door frames and glazing applications. This material forms a hard char that continues to resist fire and forms a smoke seal, helping eliminate the spread of smoke and other toxic by-products during and after a fire.Recommended Applications Sealing doors, frames and glass where fire resistance is necessaryThe Science of Better Fire Protection from 3MSince 1925 when a 3M lab assistant invented masking tape, 3M has been applying science to life developing adhesive products and technologies that help entire industries and individual businesses worldwide. The work that began with a single 3M engineer now spans decades and generations. And all of it goes into each adhesive, sealant, protective coating, device and fire resistance product including 3M Expantrol Flexible Intumescent Strip E-FIS to help businesses like yours operate faster, better and more efficiently.