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SpecSeal® FP Intumescent Firestop Plugs – Fire-Rated Penetration Sealing
Our SpecSeal® FP Intumescent Firestop Plugs are designed for temporary or permanent sealing of cable and pipe penetrations through fire-rated construction. These soft, supple foam plugs expand 10 times their original size when exposed to heat, providing up to 2-hour fire ratings while maintaining easy reinstallation capability for future cable modifications.
Key Features & Benefits
Intumescent expansion – expands 10x in all directions when exposed to heat at 350°F
Reinstallable design – easy retrofitting and cable modifications without replacement
2-hour fire rating – UL classified systems tested to ASTM E814 (UL1479) standards
Easy installation – no special tools required, conforms to irregular surfaces
Soft resilient foam – 19 pcf density provides superior sealing around cables and pipes
Paintable surface – can be painted to match surrounding construction
Multiple sizes – 2″, 4″, and 5″ diameter options for various opening requirements
Long shelf life – unlimited storage life with proper temperature conditions
Product Applications & Specifications
Standard Applications
Cable penetrations – single or grouped electrical and communications cables
Pipe penetrations – metallic and non-metallic plumbing and conduit systems
Blank openings – temporary or permanent sealing of unused sleeves
Construction types – concrete floors, gypsum board walls, masonry assemblies
Fire-Rated Performance
Fire resistance – up to 2-hour ratings through concrete and gypsum assemblies
Testing standards – ASTM E814 (UL1479) and CAN/ULC-S115 compliance
UL classification – listed firestop systems for code compliance
Expansion temperature – activation begins at 350°F (176°C)
Volume expansion – minimum 10x original size for complete opening closure
Product Models & Specifications
| Model | Opening Size | Weight | Application | Case Qty | UPC Number |
|---|---|---|---|---|---|
| FP200 | 2″ (51mm) | 0.27 lbs | Standard cables/EMT | 10 units | 730573072029 |
| FP400 | 4″ (102mm) | 0.61 lbs | Large cable bundles | 10 units | 730573072043 |
| FP500D | 5″ (127mm) | 0.59 lbs | Drain pipes/concrete only | 10 units | 730573072059 |
Physical Properties
Material – Polyurethane foam with intumescent additives
Color – Red for easy identification and inspection
Density – 19 pcf (304 kg/m³) for optimal expansion characteristics
Service temperature – Less than 130°F (54°C) continuous operation
Storage conditions – Less than 130°F (54°C), unlimited shelf life
Installation Advantages
Traditional vs. SpecSeal® FP System
| Feature | Traditional Method | SpecSeal® FP Method |
|---|---|---|
| Installation Process | Requires caulks, putties, complex mixing | One-piece installation, no mixing required |
| Curing Time | Extended curing and drying periods | Immediate protection upon installation |
| Quality Control | Varies by installer skill and mixing | Factory-manufactured consistency |
| Cable Modifications | Difficult removal, often requires replacement | Easily removed and reinstalled |
| Tools Required | Mixing equipment, application tools | No special tools needed |
| Installation Time | Multiple steps with waiting periods | Instant installation |
Special Applications
FP500D for drain pipes – specifically designed for 1-1/2″ and 2″ trade size pipes
Retrofit capability – ideal for existing installations requiring fire rating upgrades
Temporary sealing – removable protection during construction phases
Code compliance – meets penetration firestopping requirements across multiple divisions
