
3M™ Fire Barrier Sealant CP 25WB+
Intumescent, water-based sealant for sealing openings around cables, pipes and mixed penetrations. The industry workhorse.
Genuine 3M firestop products supplied with datasheets, tested system details and full application support. Every product below is available for project supply or supply-and-install packages.
Intumescent, elastomeric and water-tight sealants for penetrations and construction joints.

Intumescent, water-based sealant for sealing openings around cables, pipes and mixed penetrations. The industry workhorse.
Silicone-based sealant for exterior and movement-prone joints; excellent weatherability and flexibility.

Watertight firestop sealant for wet areas and floor penetrations exposed to water.

Sprayable fire-resistive coating for curtain-wall perimeter joints and large linear gaps.

Cementitious firestop mortar for large floor and wall openings with multiple services.

Moldable intumescent putty and pads for cable penetrations and electrical box protection.

Economical intumescent, water-based sealant for cables and blank openings — high-volume general firestopping.

Fire-rated expanding foam that fills complex and hard-to-reach openings in a single step.
Intumescent devices that crush burning plastic pipes and protect ducts and cable trays.

Intumescent collars that seal off burning plastic (PVC/CPVC/HDPE) pipes during a fire.

Intumescent wrap strips for plastic pipe and insulated metal pipe penetrations.

Flexible wrap providing fire-rated enclosure for grease and ventilation ducts.

Wrap system for protection of combustible items and services within plenum spaces.

Rigid composite sheet for large openings with cable trays and multiple services.

Re-enterable firestop pillows for temporary or frequently modified cable openings.
Engineered devices for fast, re-enterable and future-ready penetration management.

Pre-formed devices for cables through rated walls and floors — install once, re-enter any time as cabling changes.

Cast into concrete floors before pouring — penetration-ready firestopping for new construction.
Backer rods, mineral wool, tapes and identification labels to complete every tested system.
Indicative guide only — final selection is always based on the tested system detail for your exact condition.
| Site Condition | Typical 3M System |
|---|---|
| Cables / cable trays through walls & floors | CP 25WB+ sealant, Composite Sheet CS-195+, Pillows, Pass-Through Devices |
| Metallic pipes (bare or insulated) | CP 25WB+ / 2000+ sealant with wrap strip where insulated |
| Plastic pipes (PVC, CPVC, HDPE) | Pipe Collars, RC-1, Wrap Strips FS-195+ / Ultra GS |
| Large multi-service openings | Fire Barrier Mortar, Composite Sheet CS-195+ |
| Curtain wall perimeter / construction joints | FireDam Spray 200, Silicone Sealant 2000+ |
| Wet-area floor penetrations | Water Tight Sealant 3000WT |
| Electrical boxes in rated walls | Putty Pads MPP+ |
| Frequently re-cabled openings (data centres, IT) | Fire Barrier Pillows, Pass-Through Devices |
| Ventilation / grease ducts | Duct Wrap 615+, Plenum Wrap 5A+ |
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