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3M CP 25WB+ Water Based Fire Barrier Caulk 10 oz

Brand: 3M Mfg#: 98040054565
Product#: 479CP25WB11
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High-performance latex-based intumescent firestop sealant. When properly installed, this product provides up to 4-hour fire protection in tested and listed systems. Firestops items penetrating through fire-rated construction assemblies. Dries to red color, no mixing required.


  • Fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079)
  • Applied with conventional caulking equipment (excellent caulk rate)
  • Expansive UL and other third-party listed systems
  • Paintable
  • Halogen-free
  • Re-enterable/repairable
  • Excellent adhesion
  • Helps minimize sound transfer
  • Sag-resistant
  • Firestop tested up to 4 hr in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115


  • Brand: 3M
  • Product Line: CP 25WB+
  • Temperature Range: 4 - 50 deg C deg
  • Standards: ASTM E814 (UL 1479)/E1966 (UL 2079), RoHS Compliant
  • Specific Gravity: 1.35
  • VOC: Lesser than 1 g/l
  • Container Size: 10.1 fl oz
  • Cure Time: 4 hr
  • Hardness: 45
  • Physical Form: Paste
  • Color: Red
  • Container Type: Cartridge