3M Fire Barrier Sealant CP 25WB+ – Firestop Sealant for Electrical and Mechanical Applications

3M Fire Barrier Sealant CP 25WB+ is a high-performance, ready-to-use, gun-grade, latex-based intumescent firestop sealant designed to restore fire resistance in fire-rated floors, walls, and ceilings penetrated by metallic pipes, cables, conduits, and HVAC ducts. It acts as a barrier to fire, smoke, and airborne sound transmission, making it suitable for use by electrical distributors, lighting solutions providers, wire and cable installers, and switchgear suppliers in firestop and sealing applications.

Specifications

• Product Color: Red
• Application Temperature Range: 40° to 122°F (4° to 50°C)
• Service Temperature Range: -20° to 180°F (-28° to 82°C)
• Fire Resistance: Up to 4 hours per ASTM E 814 (UL 1479) & CAN/ULC S115
• Fire Resistance for Static Construction Joints: Tested per ASTM E 1966 (UL 2079)
• Sound Transmission Class (STC): 54 when tested in STC 54-rated wall assembly
• Surface Burning Characteristics (ASTM E 84): Flame Spread 0, Smoke Development 0
• Hardness (ASTM D 2240 Shore A): 45
• Tensile Strength: 85 psi (0.59 MPa)
• Volume Shrinkage (ASTM C 1241): 28%
• VOC Content (Less H2O and Exempt Solvents): < 1 g/L
• Unit Volume: 27 fl. oz. cartridge (798.5 mL, 48.7 in³)
• Shelf Life: 12 months in original unopened container stored above 68°F (20°C)

Features

• Intumescent sealant expands minimum three times its dried volume at temperatures above 1000°F (538°C)
• Firestop tested for up to 4 hours in listed penetration and joint assembly systems
• Excellent adhesion to a wide range of construction substrates and penetrants
• Re-enterable and repairable for maintenance
• Sag-resistant and paintable
• Halogen-free formulation
• Water clean-up and applied with conventional caulking equipment
• Helps minimize sound transfer with STC rating of 54 in tested wall assemblies
• Meets UL 1479 aging requirements and complies with IBC, IRC, IFC, IPC, IMC, NFPA 5000, NEC (NFPA 70), and NFPA 101 codes
• Meets LEED VOC regulations with low emissions for indoor air quality

Downloads & Links

• 3M‚Ñ¢ Fire Barrier Cast-In Device DoP France ¬†(PDF,¬†82.4KB)
• 3M(tm) Fire Barrier Sealant CP 25WB+ ¬†(PDF,¬†486.1KB)
• 3M‚Ñ¢ Fire Barrier CP 25WB+ Sealant DoP Germany ¬†(PDF,¬†68.8KB)
• 3MFB_CP_25WB_Installation_Guide ¬†(PDF,¬†555.2KB)
• ETA 09-0326R1_3M CP25WB+ ¬†(PDF,¬†51.6KB)
• 3M‚Ñ¢ Fire Barrier CP 25WB+ Sealant DoP UK ¬†(PDF,¬†73.3KB)
• 3M Brand Fire Barrier CP-25WB+ ¬†(PDF)
• 3M Brand Fire Barrier CP-25WB+ ¬†(PDF)
• 3M‚Ñ¢ Fire Protection Products Full Line Brochure ¬†(PDF,¬†3.6MB)
• 3M Fire Protection Products Specifiers Guide ¬†(PDF,¬†106.3MB)
• 3M‚Ñ¢ Fire Barrier Sealant CP 25WB+ ¬†(PDF,¬†522.3KB)
• 3M‚Ñ¢ Fire Barrier CP 25WB+ Sealant DoP Italy ¬†(PDF,¬†73.3KB)