The 2942160 from Dow Corning is a premium intumescent, acrylic-based firestop putty supplied in a 310-ml cartridge. This white putty is specifically engineered to seal joints, gaps, and penetrations around fire-rated doors, windows, and partitions. When exposed to fire or extreme heat, it expands to form a dense, insulating foam that blocks flames, smoke, and toxic gases. Tested to BS 476 Part 22/1987 (ISO 834), it provides up to 2 hours of fire resistance, making it an effective, single-component solution for maintaining fire compartmentalization in commercial and residential buildings.
Choosing the Dow Corning Firestop Putty means opting for a reliable, efficient, and versatile solution to passive fire protection. It's user-friendly and installs directly from the cartridge with no priming required, adhering easily to most construction materials. It resists mildew and mold, remains flexible over time to accommodate slight structural movement, and helps buildings meet fire-rating requirements without compromising design or performance.
