Weatherproof PU Sealant for Durable Protection | Top Quality
KASTAR WP Weatherproof PU Sealant is a high-quality, one-component polyurethane sealant engineered to provide durable, flexible, and weather-resistant sealing for construction and industrial applications. Its advanced formula adheres strongly to materials such as concrete, metal, wood, and glass, ensuring reliable sealing under harsh weather conditions. With superior UV stability and resistance to rain, temperature fluctuations, and humidity, KASTAR WP is ideal for both indoor and outdoor use. Its non-sagging consistency allows for easy application, making it the perfect solution for sealing expansion joints, façades, and other critical components exposed to the elements.
Appearance: Smooth paste
Density (g/cm³): 1.36
Sagging properties (mm): 0
Shore A hardness (A°): 48
Tack free time (min): 75
Tensile strength (MPa): 6.2
KASTAR WP Weatherproof PU Sealant is designed to deliver exceptional performance in sealing applications exposed to harsh weather conditions. Its advanced polyurethane formulation provides excellent adhesion to concrete, metal, wood, and glass, ensuring reliable and long-lasting sealing in construction, industrial, and outdoor projects. This “weatherproof PU sealant” resists UV rays, rain, and temperature fluctuations, making it suitable for both indoor and outdoor environments.
With its flexibility, KASTAR WP accommodates joint movement, preventing cracks and maintaining a watertight and airtight seal over time. Its non-sagging consistency allows for precise application on vertical and horizontal joints, delivering a clean and professional finish. Whether sealing façades, expansion joints, or industrial equipment, KASTAR WP offers unmatched durability and protection against the elements.
- Façade Sealing: Ensures weatherproofing for curtain walls, windows, and external panels.
- Expansion Joints: Provides flexible sealing for joints in concrete and masonry structures.
- Roofing & Waterproofing: Ideal for sealing roof joints and areas exposed to rain and UV.
- Industrial Use: Suitable for sealing machinery and equipment exposed to outdoor environments.
| 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) | 93% |
| 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) | 75 |
| 12 | Density | 1.36 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 75 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 93 |
| 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 | 600 ml |
| 6 | Average Nonvolatile(FSTM 9A) | 93% |
| 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) | 75 |
| 12 | Density | 1.36 |
| 13 | Shrinkage(mm) | 0 |
| 14 | Tack free time（min） | 75 |
| 15 | Curing rate(2mm/h) | 24 hours |
| 16 | Solid content (%) | 93 |
| 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
