GREAT STUFF™ Fireblock Orange Insulating Foam Sealant 12 oz. is a minimal-expansion foam sealant designed to fill, seal, and insulate gaps up to 3/4 inch while helping restrict airflow and maintain the integrity of approved fireblock systems. The distinctive orange foam makes inspection easy and is ideal for sealing electrical wiring through wall studs, service penetrations between floors, and other concealed openings where fireblocking is required. This high-performance sealant adheres to wood, metal, masonry, glass, and most plastics, creating a long-lasting, airtight, and water-resistant barrier. Tack-free in 5 to 15 minutes, trimmable in 1 hour, and fully cured in 8 hours, GREAT STUFF™ Fireblock Foam offers reliable performance for residential construction, remodeling, and repair projects.