Fireproof Sealant for Buildings – Safe & Durable Protection
KASTAR FS Fireproof Sealant is a high-performance solution specifically designed for sealing joints and gaps in buildings to ensure fire resistance and structural integrity. Its advanced formulation effectively blocks the passage of fire, smoke, and heat, providing up to 4 hours of fire resistance in compliance with international safety standards. This sealant is suitable for a wide range of substrates, including concrete, steel, and wood, making it ideal for construction, industrial, and commercial applications. KASTAR FS offers excellent adhesion, flexibility, and durability, ensuring long-lasting protection and safety in critical areas such as walls, ceilings, and fire-rated assemblies.
Appearance: Smooth paste
Density (g/cm³): 1.50
Sagging properties (mm): 0
Shore A hardness (A°): 45
Tack free time (min): 120
Tensile strength (MPa): 1.8
KASTAR FS Fireproof Sealant is the ultimate “fireproof sealant for buildings,” offering exceptional fire resistance and reliable performance. Its advanced intumescent formula expands under heat, effectively sealing gaps to block fire, smoke, and heat from spreading. With up to 4 hours of fire resistance, it complies with international fire safety standards, ensuring maximum protection for walls, ceilings, and structural joints in residential, commercial, and industrial buildings.
This sealant adheres to a wide variety of materials, including concrete, metal, and wood, delivering excellent flexibility and durability in dynamic joints. Its easy application, low sag properties, and long-lasting performance make it a trusted choice for contractors and builders looking to enhance fire safety and structural integrity in critical areas.
- Fire-rated Walls & Ceilings: Ideal for sealing joints in fire-rated drywall, concrete, and masonry assemblies.
- HVAC Ducts & Pipes: Provides fire-resistant sealing for penetrations and joints in ventilation and piping systems.
- Commercial & Industrial Facilities: Ensures fire resistance in warehouses, offices, and manufacturing plants.
- Residential Buildings: Protects structural gaps and expansion joints in fire-rated areas.
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| NO. | ITEM | DATA |
| 1 | Basic material | Intumescent Polymer |
| 2 | Color | White or Gray |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 600 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 90% |
| 7 | Temperature Resistance | -20℃ to 100℃ |
| 8 | Service Temperature limits | -10℃ to 85℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 40℃ |
| 11 | Skin Drying Time(mins) | 60 |
| 12 | Density | 1.50 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 120 |
| 15 | Fire Resistance | Up to 4 hours |
| 16 | Curing rate(2mm/h) | 24 hours |
| 17 | Solid content (%) | 95 |
KASTAR FS Fireproof Sealant is the ultimate “fireproof sealant for buildings,” offering exceptional fire resistance and reliable performance. Its advanced intumescent formula expands under heat, effectively sealing gaps to block fire, smoke, and heat from spreading. With up to 4 hours of fire resistance, it complies with international fire safety standards, ensuring maximum protection for walls, ceilings, and structural joints in residential, commercial, and industrial buildings.
This sealant adheres to a wide variety of materials, including concrete, metal, and wood, delivering excellent flexibility and durability in dynamic joints. Its easy application, low sag properties, and long-lasting performance make it a trusted choice for contractors and builders looking to enhance fire safety and structural integrity in critical areas.
- Fire-rated Walls & Ceilings: Ideal for sealing joints in fire-rated drywall, concrete, and masonry assemblies.
- HVAC Ducts & Pipes: Provides fire-resistant sealing for penetrations and joints in ventilation and piping systems.
- Commercial & Industrial Facilities: Ensures fire resistance in warehouses, offices, and manufacturing plants.
- Residential Buildings: Protects structural gaps and expansion joints in fire-rated areas.
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| NO. | ITEM | DATA |
| 1 | Basic material | Intumescent Polymer |
| 2 | Color | White or Gray |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 600 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 90% |
| 7 | Temperature Resistance | -20℃ to 100℃ |
| 8 | Service Temperature limits | -10℃ to 85℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 40℃ |
| 11 | Skin Drying Time(mins) | 60 |
| 12 | Density | 1.50 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 120 |
| 15 | Fire Resistance | Up to 4 hours |
| 16 | Curing rate(2mm/h) | 24 hours |
| 17 | Solid content (%) | 95 |
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