Bostik Fireban® One is a fire rated intumescent, low modulus, one component, and Class A polyurethane sealant. When cured it will form a tough, flexible fire rated seal capable of cyclic expansion and compression movement of 50% (±25%) of the original installed joint width.
Bostik Fireban® One is a high-performance, one-component, fire-rated (up to 4 hours) intumescent polyurethane sealant with acoustic properties for commercial and residential projects.