Best Silicone Sealant for Joints – Durable & Flexible
KASTAR SJ Silicone Sealant for Joints is a high-performance, one-component silicone-based sealant meticulously formulated to deliver durable and flexible sealing solutions for a wide range of construction and industrial applications. Its advanced silicone polymer technology ensures exceptional adhesion to materials such as concrete, masonry, metal, wood, glass, and plastics, providing reliable and long-lasting seals that accommodate joint movement without cracking or losing integrity. Resistant to UV rays, extreme temperatures, moisture, and chemical exposure, KASTAR SJ is ideal for both indoor and outdoor use. With a smooth, non-sagging consistency, this sealant is easy to apply using a caulking gun, ensuring a professional-grade finish that effectively prevents water ingress, air leaks, and corrosion in critical joint areas.
Appearance: Smooth paste
Density (g/cm³): 1.27
Sagging properties (mm): 0
Shore A hardness (A°): 35
Tack free time (min): 100
Tensile strength (MPa): 5.8
KASTAR SJ Silicone Sealant for Joints is expertly formulated to deliver exceptional performance in sealing and bonding applications where joint flexibility and durability are crucial. Its high-quality silicone polymer ensures superior adhesion to a wide range of substrates, including concrete, masonry, metal, wood, glass, and plastics, making it ideal for sealing expansion joints, control joints, and other critical joint areas in construction and industrial projects. This “silicone sealant for joints” offers outstanding resistance to UV radiation, extreme temperatures, moisture, and chemical exposure, ensuring that seals remain intact and effective over time.
The sealant’s flexible and elastic properties allow it to accommodate joint movement caused by structural shifts, thermal expansion, and contraction, preventing cracks and maintaining watertight and airtight seals that enhance energy efficiency and structural integrity. Its smooth, non-sagging consistency facilitates easy and precise application with a caulking gun, resulting in a clean and professional finish without dripping or running. Additionally, KASTAR SJ is mold and mildew resistant, making it a hygienic choice for areas prone to moisture and contamination. With its long-lasting durability and minimal maintenance requirements, KASTAR SJ Silicone Sealant for Joints is the trusted solution for professionals seeking reliable and high-performance sealing in demanding joint applications.
- Expansion Joints: Provides flexible sealing for dynamic joints in buildings and concrete structures, accommodating movement without cracking.
- Control Joints: Ensures durable sealing for static joints in slabs, pavements, and industrial floors, preventing water ingress and structural damage.
- Façade Systems: Ideal for sealing curtain walls, window frames, and external panels, enhancing weatherproofing and energy efficiency.
- Roofing: Suitable for sealing roof joints, flashing, and penetrations to prevent leaks and maintain waterproofing integrity.
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| NO. | ITEM | DATA |
| 1 | Basic material | Silicone Polymer |
| 2 | Color | White, Clear, or Colored |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 600 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 92% |
| 7 | Temperature Resistance | -20℃ to 120℃ |
| 8 | Service Temperature limits | -10℃ to 100℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 40℃ |
| 11 | Skin Drying Time(mins) | 100 |
| 12 | Density | 1.30 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 100 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 92% |
| 17 | Shelf life | 18 months |
| 18 | Storage | Store in a cool, dry place away from direct sunlight. |
KASTAR SJ Silicone Sealant for Joints is expertly formulated to deliver exceptional performance in sealing and bonding applications where joint flexibility and durability are crucial. Its high-quality silicone polymer ensures superior adhesion to a wide range of substrates, including concrete, masonry, metal, wood, glass, and plastics, making it ideal for sealing expansion joints, control joints, and other critical joint areas in construction and industrial projects. This “silicone sealant for joints” offers outstanding resistance to UV radiation, extreme temperatures, moisture, and chemical exposure, ensuring that seals remain intact and effective over time.
The sealant’s flexible and elastic properties allow it to accommodate joint movement caused by structural shifts, thermal expansion, and contraction, preventing cracks and maintaining watertight and airtight seals that enhance energy efficiency and structural integrity. Its smooth, non-sagging consistency facilitates easy and precise application with a caulking gun, resulting in a clean and professional finish without dripping or running. Additionally, KASTAR SJ is mold and mildew resistant, making it a hygienic choice for areas prone to moisture and contamination. With its long-lasting durability and minimal maintenance requirements, KASTAR SJ Silicone Sealant for Joints is the trusted solution for professionals seeking reliable and high-performance sealing in demanding joint applications.
- Expansion Joints: Provides flexible sealing for dynamic joints in buildings and concrete structures, accommodating movement without cracking.
- Control Joints: Ensures durable sealing for static joints in slabs, pavements, and industrial floors, preventing water ingress and structural damage.
- Façade Systems: Ideal for sealing curtain walls, window frames, and external panels, enhancing weatherproofing and energy efficiency.
- Roofing: Suitable for sealing roof joints, flashing, and penetrations to prevent leaks and maintain waterproofing integrity.
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| NO. | ITEM | DATA |
| 1 | Basic material | Silicone Polymer |
| 2 | Color | White, Clear, or Colored |
| 3 | Consistency | Paste |
| 4 | Application Consistency | Caulking Gun |
| 5 | Net Weight | 600 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 92% |
| 7 | Temperature Resistance | -20℃ to 120℃ |
| 8 | Service Temperature limits | -10℃ to 100℃ |
| 9 | Storage Temperature | 5℃ to 35℃ |
| 10 | Application Temperature | 5℃ to 40℃ |
| 11 | Skin Drying Time(mins) | 100 |
| 12 | Density | 1.30 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 100 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 92% |
| 17 | Shelf life | 18 months |
| 18 | Storage | Store in a cool, dry place away from direct sunlight. |
KASTAR 281 Acrylic Liquid Nail – Strong & Reliable Formula
