High Temperature Silicone Sealant 1500°C Black | Heavy Duty Heat Resistant Fire Cement & Flue Sealer | For Wood Burner Stoves, Chimneys, Ovens & Fireplace Repair | Professional Grade Cartridge

EXTREME HEAT RESISTANCE UP TO 1500°C: Engineered for the harshest environments, this silicate-based formula withstands direct flame and continuous temperatures of 1500°C (2732°F). Far superior to standard red automotive silicones (max 300°C), it is the ultimate solution for sealing joints in wood-burning stoves, multi-fuel fires, pizza ovens, and industrial flues. PERMANENT "STONE-HARD" VITRIFICATION: Unlike rubbery gaskets that degrade, this sealant cures to a rigid, rock-hard ceramic mass. Through a unique vitrification process, it bonds physically with masonry and metal to form a hermetic, smoke-tight seal that prevents dangerous carbon monoxide leaks and maintains flue draught efficiency. Note: Designed for static joints; does not remain flexible. SUPERIOR ADHESION TO MULTIPLE SURFACES: formulated to bond aggressively to cast iron, mild steel, stainless steel, firebrick, concrete, stone, and clay. Perfect for sealing flue spigots, fixing loose firebricks, bonding ceramic glass tape, and sealing register plates. PROFESSIONAL GREY/CHARCOAL FINISH: The thixotropic (non-slump) paste applies black and cures to a discreet, matte dark grey/charcoal that blends seamlessly with cast iron stoves and flue pipes. This ensures invisible repairs that maintain the aesthetic of your hearth.