FS-ONE MAX: Hilti’s High-Performance Intumescent Firestop Sealant​

In the realm of construction and building safety, ensuring that fire and smoke do not spread through penetrations in walls and floors is paramount. Hilti’s FS-ONE MAX stands out as a high-performance intumescent firestop sealant engineered to address these critical concerns.​

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Features and Benefits of FS-ONE MAX

  • Intumescent Properties: FS-ONE MAX expands when exposed to fire, effectively sealing gaps and preventing the passage of flames and smoke. ​
  • Versatile Application: Suitable for a variety of base materials, including concrete, masonry, and drywall, making it adaptable to diverse construction scenarios. ​
  • Comprehensive Penetration Sealing: Effective for sealing metal pipes (copper, steel, EMT), insulated metal pipes, plastic pipes (closed or vented), and various cable penetrations, including single cables, cable bundles, and cable trays. ​
  • Environmental Considerations: As a water-based acrylic dispersion, FS-ONE MAX is easy to clean and paintable, with low VOC content, aligning with green building standards. ​

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Applications of FS-ONE MAX

  • Metal Pipe Penetrations: Ideal for sealing around copper, steel, and EMT pipes, ensuring fire resistance at these critical junctures.​
  • Insulated Metal Pipes: Suitable for both steel and copper pipes with insulation, maintaining the integrity of fire-rated assemblies.​
  • Plastic Pipes: Effective for both closed and vented plastic pipe penetrations, expanding upon exposure to fire to seal openings.​
  • Cable Penetrations: Versatile in sealing single cables, cable bundles, and cable trays, preventing fire spread through electrical pathways.​

Technical Specifications

  • Color: Red​
  • Application Temperature Range: 35°F to 104°F (1.5°C to 40°C)​
  • Cure Time: Approximately 2mm depth per 3 days at 75°F (24°C) and 50% relative humidity​
  • Expansion Ratio: Up to 1:5 when exposed to fire​
  • VOC Content: 9 g/l, meeting LEED v4 requirements for low-emitting materials​

For detailed technical data and installation instructions, refer to Hilti’s official product documentation. ​

FAQ

  1. What is FS-ONE MAX used for?
    • FS-ONE MAX is an intumescent firestop sealant designed to seal penetrations in fire-rated walls and floors, preventing the spread of fire and smoke.​
  2. Can FS-ONE MAX be painted after application?
    • Yes, FS-ONE MAX is paintable once cured, allowing it to blend seamlessly with surrounding surfaces.​
  3. Is FS-ONE MAX suitable for outdoor use?
    • FS-ONE MAX is primarily designed for indoor applications. For outdoor use, consult Hilti’s guidelines or contact their technical support for recommendations.​
  4. What is the shelf life of FS-ONE MAX?
    • The shelf life of FS-ONE MAX is approximately 18 months when stored in unopened, original containers at recommended storage temperatures.​
  5. How does FS-ONE MAX react in a fire situation?
    • In the event of a fire, FS-ONE MAX expands (intumesces) to fill gaps around penetrations, effectively sealing openings to prevent the passage of flames and smoke.