3M Company Cp 25WB Fire Barrier Intumescent Caulk 10.1 Oz

Product Description

The 3M COMPANY CP 25WB is a premium water-based intumescent firestop sealant supplied in a 10.1 oz cartridge. It is designed for use in tested and listed firestop systems rated for up to 4 hours of fire resistance. When exposed to heat, the intumescent formula expands to seal off penetrations and slow fire and smoke spread through wall and floor assemblies. Licensed contractors and firestop specialists install this product in commercial and residential construction where building codes require rated penetration sealing.

This sealant is applied in through-penetration firestop applications including pipe, cable, conduit, and duct penetrations through fire-rated wall and floor assemblies. It is suited for use in multi-family residential, commercial, and institutional construction projects where UL-listed firestop systems are required by code. The product is sold in cases of 12 cartridges per the manufacturer unit packaging.

Key Features

• Intumescent formula expands under heat to maintain integrity of rated fire assemblies
• Supports tested and listed firestop systems with ratings up to 4 hours
• Water-based formulation for easier cleanup and low odor during application
• 10.1 oz cartridge fits standard caulk guns for controlled application
• Packaged 12 cartridges per case for jobsite efficiency

Compatibility

Designed for use in tested and listed penetration firestop systems as specified by the system manufacturer. Consult the applicable UL or other third-party listed system design for approved substrates, joint configurations, and annular space requirements before installation.

Installation Notes

Installation must be performed by qualified contractors familiar with firestop system requirements and applicable building codes including IBC penetration sealing provisions. Verify the correct listed system design before applying, as annular space, substrate type, and penetrant size all affect compliance. Do not apply over uncured or incompatible backing materials. Follow all project-specific firestop submittals and inspection requirements.

Technical Specifications

• Net Fill Volume: 10.1 oz
• Fire Rating: Up to 4 hours (in tested and listed systems)
• Formula Type: Water-based intumescent
• Package Quantity: 12 cartridges per case
• Unit of Measure: Each (EA)
• Weight: 13.65 pounds (case)

Standard Information

• Brand: 3M COMPANY
• Manufacturer Part Number: CP 25WB