Best High-Temperature Sealant for Extreme Conditions
KASTAR HT High-Temperature Sealant is engineered for sealing and bonding applications exposed to extreme heat, delivering reliable performance and durability. Withstanding temperatures up to 1200°F (650°C), this high-performance sealant is ideal for industrial, automotive, and construction projects where heat resistance is critical. Its advanced formulation provides excellent adhesion to metals, ceramics, and glass, forming a flexible and durable seal that resists cracking, shrinking, and chemical exposure. KASTAR HT ensures long-lasting protection in high-stress environments, making it perfect for furnaces, chimneys, exhaust systems, and other high-temperature applications.
Appearance: Smooth paste
Density (g/cm³): 1.40
Sagging properties (mm): 0
Shore A hardness (A°): 60
Tack free time (min): 90
Tensile strength (MPa): 2.5
KASTAR HT High-Temperature Sealant is specifically formulated to deliver superior performance in high-heat environments. Its advanced silicone-based formula can withstand temperatures up to 1200°F (650°C) without losing adhesion or flexibility, making it the ideal choice for “high-temperature sealant” applications. This sealant resists cracking, shrinking, and degradation caused by heat, chemicals, and environmental exposure.
Compatible with a variety of materials, including metals, ceramics, and glass, KASTAR HT ensures a secure bond and a durable seal in extreme conditions. Its smooth consistency and easy application allow for precise sealing in critical areas such as furnaces, exhaust systems, and industrial machinery. Whether for residential, commercial, or industrial use, KASTAR HT provides reliable protection and long-lasting results.
- Furnaces & Boilers: Provides heat-resistant sealing for high-temperature systems.
- Chimneys & Fireplaces: Ensures durable bonding and sealing exposed to heat and flames.
- Automotive Exhaust Systems: Protects joints and gaps in high-heat automotive components.
- Industrial Equipment: Ideal for sealing machinery and components in high-temperature operations.
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| NO. | ITEM | DATA |
| 1 | Basic material | Silicone Polymer |
| 2 | Color | Red or Black |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 300 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 98% |
| 7 | Temperature Resistance | -40℃ to 650℃ |
| 8 | Service Temperature limits | -20℃ to 600℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 50℃ |
| 11 | Skin Drying Time(mins) | 30 |
| 12 | Density | 1.40 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 90 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 98 |
| 17 | Shelf life | 12 months |
| 18 | Storage | Store in a cool, dry place away from direct sunlight. |
KASTAR HT High-Temperature Sealant is specifically formulated to deliver superior performance in high-heat environments. Its advanced silicone-based formula can withstand temperatures up to 1200°F (650°C) without losing adhesion or flexibility, making it the ideal choice for “high-temperature sealant” applications. This sealant resists cracking, shrinking, and degradation caused by heat, chemicals, and environmental exposure.
Compatible with a variety of materials, including metals, ceramics, and glass, KASTAR HT ensures a secure bond and a durable seal in extreme conditions. Its smooth consistency and easy application allow for precise sealing in critical areas such as furnaces, exhaust systems, and industrial machinery. Whether for residential, commercial, or industrial use, KASTAR HT provides reliable protection and long-lasting results.
- Furnaces & Boilers: Provides heat-resistant sealing for high-temperature systems.
- Chimneys & Fireplaces: Ensures durable bonding and sealing exposed to heat and flames.
- Automotive Exhaust Systems: Protects joints and gaps in high-heat automotive components.
- Industrial Equipment: Ideal for sealing machinery and components in high-temperature operations.
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| NO. | ITEM | DATA |
| 1 | Basic material | Silicone Polymer |
| 2 | Color | Red or Black |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 300 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 98% |
| 7 | Temperature Resistance | -40℃ to 650℃ |
| 8 | Service Temperature limits | -20℃ to 600℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 50℃ |
| 11 | Skin Drying Time(mins) | 30 |
| 12 | Density | 1.40 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 90 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 98 |
| 17 | Shelf life | 12 months |
| 18 | Storage | Store in a cool, dry place away from direct sunlight. |
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