Fj-A11 B2 Class Fireproof Multi Surface Foam Adheres to Wood, Metal, Stone and Plastic

Fj-A11 B2 Class Fireproof Multi Surface Foam Adheres to Wood, Metal, Stone and Plastic. Passed authoritative lab tests, meets Class B2 flame retardant standard, perfect for residential & general construction fire sealing demands. Oxygen index more than 26%, self-extinguishes within 3 seconds after leaving fire source to stop flame spread. Adopts high-efficiency flame retardants, prevent gun clogging and tank valve blockage, smooth on-site construction & less rework. Adequate initial expansion for tight gap filling, great sound & thermal insulation. Low post-expansion force, no deformation of window frames, wall panels after curing.