3M Fire Barrier CP-25WB+

3M Fire Barrier CP-25WB+

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).

SKU: CP-25WB+ Category: Tags: , , ,
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  • Firestop tested for through penetration applications up to 4 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
  • Applied with conventional caulking equipment with excellent caulk rate
  • Sag-resistant properties offer clean application as well as strong adhesion
  • Water-based and paintable sealant provides easy application and clean-up
  • Sealant is re-enterable and repairable
  • Fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079)
  • Sealant helps minimize sound transfer

Download the MSDS PDF: MSDS

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