3M Fire Barrier Sealant CP 25WB+, Red, 20 fl oz Sausage Pack, 10/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 durability. This one-component, latex-based sealant forms a monolithic firestop seal that helps control fire, smoke, and noxious gases.

Its red color and 20 fl oz sausage pack format make it easy to identify and apply. The product comes in a 10/case pack, ensuring you have enough sealant for multiple applications.

High Performance Sealant Grade

This sealant is fire resistance tested for static construction joint systems according to ASTM E 1966 (UL 2079). It also meets firestop standards for through penetration applications up to 4 hours per ASTM E814 (UL 1479) and CAN/ULC-S115.

These certifications confirm the CP 25WB+ grade's ability to maintain firestop integrity in demanding conditions, making it suitable for rated wall, floor, and floor-ceiling assemblies.

Sag-Resistant Easy Application

The sag-resistant properties of this sealant provide clean application and strong adhesion on both walls and floors. Its water-based, paintable formula allows for easy cleanup and finishing after installation.

Applied with conventional caulking equipment, the gun-grade sealant requires no mixing, offering an excellent caulk rate and simplifying the installation process.

Sound Minimizing Sealant Benefits

Besides fire protection, the 3M Fire Barrier Sealant CP 25WB+ helps minimize sound transfer, acting as a barrier to airborne noise. This feature is valuable in commercial and residential buildings where sound control is important.

The sealant’s ability to expand when exposed to high temperatures also contributes to maintaining a tight seal, enhancing both fire and sound resistance in penetrations and joints.

Convenient Pack Size Format

Available in a 20 fl oz sausage pack, this sealant is designed for ease of use with standard caulking guns. The 10/case pack size supports larger projects or multiple smaller jobs without frequent reordering.

This format ensures consistent application and reduces waste, making the 3M Fire Barrier Sealant CP 25WB+ a practical choice for contractors and installers.