Polyurethane Sealant for Joints – Durable & Strong Bond
KASTAR PJ Polyurethane Sealant for Joints is a high-performance, one-component sealant designed for sealing and bonding applications in construction and industrial projects. This versatile sealant delivers exceptional adhesion to concrete, metal, wood, and other substrates, providing durable and flexible sealing for expansion and control joints. Resistant to weather, UV rays, and temperature fluctuations, KASTAR PJ is ideal for both indoor and outdoor use. Its smooth, non-sagging consistency ensures precise application, while its flexibility prevents cracking and ensures long-lasting protection against water and air infiltration.
Appearance: Smooth paste
Density (g/cm³): 1.40
Sagging properties (mm): 0
Shore A hardness (A°): 45
Tack free time (min): 80
Tensile strength (MPa): 6.8
KASTAR PJ Polyurethane Sealant for Joints is engineered to provide superior sealing performance in dynamic joints exposed to movement, weather, and temperature changes. Its advanced polyurethane formula ensures excellent adhesion to a variety of substrates, including concrete, metal, and wood, making it ideal for sealing expansion and control joints in buildings, pavements, and industrial facilities.
This sealant is highly resistant to UV rays, water, and harsh weather conditions, ensuring long-term durability in both indoor and outdoor environments. Its smooth, non-sagging consistency allows for easy application on vertical and horizontal surfaces, delivering a professional finish. Flexible yet durable, KASTAR PJ prevents cracking, water ingress, and air leakage, making it the ultimate solution for sealing joints in construction and industrial applications.
- Expansion Joints: Provides flexible sealing for dynamic joints in concrete and masonry structures.
- Control Joints: Ensures durable sealing for construction slabs and pavements.
- Industrial Use: Ideal for sealing joints in warehouses, factories, and heavy-duty structures.
- Façade Sealing: Suitable for curtain walls, window frames, and external panel joints.
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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 | 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) | 80 |
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 | 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) | 80 |

KASTAR 281 Acrylic Liquid Nail – Strong & Reliable Formula
