Polyurethane Construction Sealant – Strong & Durable Seal
KASTAR PC Polyurethane Construction Sealant is a high-performance, one-component sealant designed to deliver durable and flexible sealing solutions for construction projects. With excellent adhesion to concrete, brick, metal, and other construction materials, this sealant provides superior weather resistance, UV stability, and long-term durability. It accommodates movement in expansion and contraction joints, preventing cracking and water ingress. KASTAR PC is easy to apply, offers a smooth finish, and is ideal for both indoor and outdoor applications, ensuring a professional-grade seal that enhances the integrity and appearance of construction projects.
Appearance: Black homogeneous paste
Density (g/cm³): 1.36
Sagging properties (mm): 0
Shore a hardness (A°): 60
Tack free time (min): 35
Tensile strength( Mpa): 6.5
KASTAR PC Polyurethane Construction Sealant is engineered for heavy-duty construction applications, delivering exceptional performance and reliability. Its advanced polyurethane formula ensures strong adhesion to a wide range of construction materials, including concrete, brick, metal, and wood. This “polyurethane construction sealant” is highly resistant to weather, UV, and temperature fluctuations, making it ideal for indoor and outdoor use.
Designed to accommodate joint movement caused by expansion and contraction, KASTAR PC prevents cracking, leaks, and water ingress, ensuring the longevity and stability of sealed joints. Its smooth, non-sagging consistency enables precise application, even on vertical and overhead surfaces. KASTAR PC is perfect for sealing construction joints, expansion joints, and façade systems, providing a professional-grade finish that enhances the structural integrity and appearance of projects.
- Expansion Joints: Seals dynamic joints in concrete and masonry structures.
- Façade Systems: Provides flexible sealing for curtain walls and panel joints.
- Roofing & Waterproofing: Ideal for sealing joints in roofs and wet areas.
- Infrastructure Projects: Suitable for bridges, tunnels, and other large-scale construction.
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NO. | ITEM | DATA |
1 | Basic material | Polyurethane Polymer |
2 | Color | White, Gray, or Black |
3 | Consistency | Paste |
4 | Application Consistency | Caulking Gun |
5 | Net Weight | 300 ml |
6 | Average Nonvolatile(FSTM 9A) | 92% |
7 | Temperature Resistance | -20℃ to 100℃ |
8 | Service Temperature limits | -10℃ to 80℃ |
9 | Storage Temperature | 5℃ to 35℃ |
10 | Application Temperature | 5℃ to 40℃ |
11 | Skin Drying Time(mins) | 80 |
12 | Density | 1.35 |
13 | Shrinkage(mm) | 0 |
14 | Tack free time(min) | 80 |
15 | Curing rate(2mm/h) | 24 hours |
16 | Solid content (%) | 92 |
17 | Shelf life | 12 months |
18 | Storage | Store in a cool, dry place away from direct sunlight. |
NO. | ITEM | DATA |
1 | Basic material | Polyurethane Polymer |
2 | Color | White, Gray, or Black |
3 | Consistency | Paste |
4 | Application Consistency | Caulking Gun |
5 | Net Weight | 300 ml |
6 | Average Nonvolatile(FSTM 9A) | 92% |
7 | Temperature Resistance | -20℃ to 100℃ |
8 | Service Temperature limits | -10℃ to 80℃ |
9 | Storage Temperature | 5℃ to 35℃ |
10 | Application Temperature | 5℃ to 40℃ |
11 | Skin Drying Time(mins) | 80 |
12 | Density | 1.35 |
13 | Shrinkage(mm) | 0 |
14 | Tack free time(min) | 80 |
15 | Curing rate(2mm/h) | 24 hours |
16 | Solid content (%) | 92 |
17 | Shelf life | 12 months |
18 | Storage | Store in a cool, dry place away from direct sunlight. |

KASTAR 281 Acrylic Liquid Nail – Strong & Reliable Formula
