3M CP 25WB Plus Fire-Barrier Sealant Caulk – Reliable and Fire-Resistant, 10.1 fl. oz.

3M CP 25WB Plus Fire-Barrier Sealant Caulk – Reliable and Fire-Resistant, 10.1 fl. oz.

Ensure superior fire protection in commercial and residential construction with 3M CP 25WB Plus Fire-Barrier Sealant Caulk – a reliable and fire-resistant solution engineered to seal joints, penetrations, and gaps in fire-rated assemblies. This high-performance, red intumescent sealant expands when exposed to heat, forming a durable char that helps prevent the spread of flames, smoke, and toxic gases during a fire—making it an essential component in passive fire protection systems.

Formulated for both interior and exterior use, CP 25WB Plus adheres strongly to common building materials including concrete, steel, drywall, and masonry. It remains flexible after curing, accommodating building movement and vibration without cracking—ideal for curtain walls, perimeter joints, and through-penetration firestops.

The 10.1 fl. oz. cartridge is designed for easy application with a standard caulk gun, delivering smooth, consistent bead control for professional results. Once cured, the bright red color provides high visibility for inspections and quality assurance.

Key Features:

• Fire-Resistant Formula: Tested to ASTM E814/UL 1479 for up to 3-hour fire ratings.
• Intumescent Technology: Expands under heat to seal openings during a fire.
• Durable & Flexible: Resists cracking, shrinking, and weathering over time.
• Paintable & Toolable: Easy to finish and blend into building surfaces.
• Indoor/Outdoor Use: Suitable for both exposed and concealed applications.
• Low VOC: Complies with environmental and indoor air quality standards.

Applications: Firestopping around pipes, cables, ducts, and joints in walls, floors, and ceilings.

With 3M CP 25WB Plus Fire-Barrier Sealant Caulk, trust a proven, code-compliant solution that delivers safety, durability, and peace of mind—protecting lives and structures when it matters most.