RectorSeal 66640 Fire Stoppin 10.3 oz Red Intumescent Firestop Sealant

RectorSeal Fire Stoppin is a ready-to-use, single-component intumescent firestop sealant designed to seal penetrations through fire-rated walls and floor assemblies. Packaged in a convenient 10.3 oz cartridge, this bright red formula provides a reliable passive fire protection barrier that helps contain the spread of smoke, flame, and toxic gases through openings created by pipes, conduit, cables, and other building penetrations.

Fire Stoppin expands when exposed to heat, filling gaps and annular spaces around penetrants to maintain the fire resistance of the assembly. Its water-based, latex formula makes it easy to apply with a standard caulk gun and simple to clean up with water before curing.

Key Features:

• Intumescent formula expands under heat to seal fire-rated penetrations
• 10.3 oz (cartridge) — compatible with standard caulk guns
• Bright red color for easy identification and inspection compliance
• Water-based, latex formula for easy water cleanup
• Paintable after curing
• Suitable for use around pipes, conduit, cables, and ductwork penetrations
• Helps maintain the fire-resistance rating of walls and floor/ceiling assemblies
• Meets applicable UL fire ratings for through-penetration firestop systems

RectorSeal Fire Stoppin is a go-to solution for contractors, plumbers, electricians, and HVAC professionals who need a code-compliant, easy-to-apply firestop sealant for commercial and residential construction projects.