NUCO GG-266 INTUMESCENT FIRESTOP SSG RED 591 ML

Self-Seal® GG-266 is an intumescent, neutral-cure silicone firestop sealant specifically engineered for combustible service penetrations in fire-rated walls and floors. When exposed to temperatures exceeding 150°C (300°F), it rapidly expands to fill voids created by melting pipes, forming a patented graphite-enhanced char that maintains critical fire barriers. This GREENGUARD GOLD certified, non-sag silicone remains water-resistant throughout curing and is freeze-thaw stable, with testing under positive pressure to simulate real fire conditions. Ideal for sealing PVC, ABS, CPVC, PEX, and other plastic pipes (2"–4" diameters), it requires just a 5/16" annular space and complies with stringent firestopping standards for life safety and property protection.

Key Applications:
• Combustible pipes: Seals PVC, ABS, IPEX Aquarise/XFR, PEX, FRPP & CPVC penetrations
• Concrete floors: Protects conical/cored openings with plastic pipes up to 4" diameter
• Fire-rated assemblies: Maintains integrity in walls/floors during pipe collapse

Before ordering, consult Self-Seal^® firestop listings to confirm that there is a firestop system for your particular site condition. Self-Seal^® MECHANICAL and ELECTRICAL APPLICATION CHARTS can be used as a quick reference. Self-Seal^® GG-266 is only recommended for use in firestop systems that are listed in the APPLICATION GUIDELINES FOR Self-Seal^® GG-266 SILICONE INTUMESCENT FIRESTOP CAULK.