Nullifire FJ203 Fire Resistant Sealing Cord consists of rock wool that is covered with flexible glass fibers.
Nullifire FJ203 Fire-resistant Sealing Cord is used as a fire-resistant joint seal / backing to seal movement joints between different parts of masonry, between (load-bearing) walls and floor slabs, whether or not directly in contact with the fire, in all kinds of buildings .
- Can be used in irregular joints
- Available on rolls of great length
- Easy to cut