What is an Intumescent Strip
![FIRE SEAL B](https://daoseal.com/wp-content/uploads/2021/04/FIRE-SEAL-B.jpg)
What is an Intumescent Strip Intumescent Strips, mainly used in steel doors and wooden doors and door frame, between the door and door. When a fire occurs, the expansion seal automatically expands, sealing the door gap, blocking the air circulation between the two spaces, effectively preventing the early fire smoke, toxic gas and hot […]