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BSF-E Firestop is a dispersion-based sealant which forms a sealing foam in case of fire. It does not contain any halogenated compounds which can cause corrosive or toxic gases in case of fire (zero halogen and solvent-free).
This sealant is used for sealing conduits, wall lead-throughs, cable ducts, expansion joints, fire doors and windows.

Advantages: in case of fire it will expand at temperatures of only 140 °C and form a firm, heat-insulating carbon foam which will prevent fire and smoke from propagating.