3M Fire Barrier Sealant CP 25WB+, Red, 27 fl oz Cartridge, 6 Each/Case

• Fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079)
• Firestop tested for through penetration applications up to 4 hours in accordance with ASTM E814 (UL 1479) and CAN/ULC-S115
• Sag-resistant properties offer clean application as well as strong adhesion in both wall and floor applications
• Sealant helps minimize sound transfer
• Sealant is re-enterable and repairable
• Water-based and paintable sealant provides easy application and clean-up

3M Fire Barrier Sealant CP 25WB+ is a one-component, latex-based, intumescent sealant that dries to form a monolithic firestop seal. This sealant also acts as a barrier to airborne sound transmission. As penetrants are exposed to fire, the intumescent property of this material allows the sealant to expand and help maintain a firestop penetration seal for up to 4 hours. This sealant is designed to help control the spread of fire, smoke and noxious gases before, during and after exposure to a fire when installed in accordance with a listed through-penetration or fire-resistive joint assembly system (STC-Rating of 54 when tested in a STC 54-rated wall assembly). 3M Fire Barrier Sealant CP 25WB+ firestops blank openings and penetrations passing through fire-rated floor, floor/ceiling or wall assemblies and other fire-rated interior building construction. This halogen-free sealant is capable of expanding a minimum of 3 times its dried volume when exposed to temperatures above 1000°F (538°C). We engineered this sag-resistant sealant to exhibit strong adhesion to a full range of construction substrates and penetrants. Applied with conventional caulking equipment, this gun-grade sealant offers an excellent caulk rate - no mixing is required. In addition, this water-based sealant is paintable as well as re-enterable and repairable, offering easy application and clean-up.

Dependable and Easy-to-Use Firestop Sealant
Tough and ready-to-use, 3M™ Fire Barrier Sealant CP 25WB+ is a high-performance, one-component, latex-based, intumescent sealant that dries to form a monolithic firestop seal. This sealant also acts as a barrier to airborne sound transmission. As penetrants are exposed to fire, the unique intumescent property of this material allows 3M™ Fire Barrier Sealant CP 25WB+ to expand and help maintain a firestop penetration seal for up to 4 hours. This sealant is designed to help control the spread of fire, smoke and noxious gases before, during and after exposure to a fire when installed in accordance with a listed through-penetration or fire-resistive joint assembly system (STC-Rating of 54 when tested in a STC 54-rated wall assembly).

Recommended Applications

• HVAC ducts and vents
• Metallic and non-metallic pipes
• Blank openings
• Single and bundled cables
• Insulated pipe
• Pipe and cable through-penetrations
• Busways
• Combos
• Rated wall, floor and floor-ceiling assemblies
• Static construction joints

Ready to Protect for Consistent Results
3M™ Fire Barrier Sealant CP 25WB+ firestops blank openings and penetrations passing through fire-rated floor, floor/ceiling or wall assemblies and other fire-rated interior building construction. This halogen-free sealant is capable of expanding a minimum of 3 times its dried volume when exposed to temperatures above 1000°F (538°C). We engineered this sag-resistant sealant to exhibit strong adhesion to a full range of construction substrates and penetrants. Applied with conventional caulking equipment, this gun-grade sealant offers an excellent caulk rate, no mixing is required. In addition, this water-based sealant is paintable as well as re-enterable and repairable, offering easy application and clean-up.

Reliable and Affordable Fire Protection
Effective and easy to install, 3M™ Fire Barrier Sealant CP 25WB+ is part of our family of fire protection products that offer the broadest, long-lasting solutions for a variety of commercial, industrial and residential applications. As a trusted leader in the fire protection industry, 3M offers a broad line of affordable products designed to meet the most demanding firestop requirements. Find the solution you need from the industry-preferred line of fire protection products.

Trusted 3M Fire Barrier

The 3M Fire Barrier Sealant CP 25WB+ is a reliable firestop solution designed for safety and performance. This one-component, latex-based sealant forms a monolithic firestop seal that helps control fire, smoke, and gases during a fire event.

Its intumescent property allows it to expand when exposed to heat, maintaining a firestop penetration seal for up to 4 hours. This model ensures dependable protection in critical construction joints and penetrations.

Effective Red Sealant Cartridge

This product comes in a 27 fl oz cartridge, making application straightforward and efficient. The red color helps with easy identification during installation and inspection processes.

Designed for use with conventional caulking equipment, the cartridge format supports a clean, sag-resistant application on walls and floors, ensuring strong adhesion and neat results.

Versatile Six Each Case

Sold in cases of 6 cartridges, this pack size is ideal for contractors and projects requiring multiple applications. It balances convenience and value for commercial or industrial use.

The pack size supports consistent supply on job sites, reducing downtime and ensuring that the 3M Fire Barrier Sealant CP 25WB+ is always ready for firestop needs in rated wall, floor, and ceiling assemblies.

High-Performance Fire Resistance

Tested to meet ASTM E 1966 and ASTM E814 standards, this sealant offers fire resistance for static construction joints and through penetrations up to 4 hours. It complies with UL 2079, UL 1479, and CAN/ULC-S115 certifications.

Its firestop capabilities make it suitable for HVAC ducts, pipes, cables, and blank openings, providing peace of mind in fire-rated interior building construction.

Water-Based Paintable Sealant

The water-based formula of this sealant allows for easy application and cleanup. It is paintable, re-enterable, and repairable, which adds flexibility during and after installation.

Its sag-resistant properties ensure a clean finish, while the sealant also helps minimize sound transfer, enhancing both fire safety and acoustic performance in buildings.