B1 Foam Gun Grade FR 750 ml is a professional-grade, fire-resistant expanding polyurethane foam designed for use with dedicated foam guns, offering precise delivery and clean control for filling and sealing joints, gaps, and penetrations in fire-rated walls, floors, and ceilings. The “B1” classification ensures high fire resistance, helping to prevent the spread of flames, heat, and smoke in accordance with many building safety standards.

Housed in a 750 ml canister compatible with standard PU foam guns, this product enables accurate bead control and minimal waste. Upon dispensing, the foam expands to fill voids, sealing tightly around cables, pipes, ducts, structural frames, and insulation materials. It cures to a dense, closed-cell structure that provides excellent thermal insulation, sound reduction, and mechanical stability.