KASTAR 113 High Modulus PU Sealant For Construction
Kastar’s High Modulus PU Sealant for Construction is a high-range adhesive. It gives excellent bonding performance in tough construction activities. The tremendous tensile strength and bonds well to joints, spaces, and fissures commonly found in concrete, metal, glass, and other construction structures. This sealant provides flexibility to the joints, and this means that movements and expansion in construction joints do not affect it. It is weatherproof, UV resistant, and can withstand high or low temperatures therefore it can be used indoors or outdoors. It is available in two-part high-grade packers. Kastar’s high modulus PU sealant can be applied easily and cured fast. It leaves a long-lasting and durable seal on any structure.
Appearance: Black/White/Gray homogeneous paste
Density (g/cm³): 1.35±0.05
Sagging properties (mm): 0
Elongation at break (%): ≥600
Volatile content (%): ≤4
Stretch modulus (Mpa): >0.4
Kastar PU Sealant for Construction is one of the rigid and highly rated flexible adhesives meant for sealing and bonding construction works. It offers good wetting properties for concrete, metal, glass, wooden surfaces, and other substrates and demonstrates long-lasting performance callbacks. The final coating can withstand exposure to weather factors, UV radiation, and other temperatures and is therefore usable on buildings and structures both inside and out. Due to its rapid curing, high durability, and easy application, it can be used for the sealing of expansion joints, and panels, and filling of gaps within building structures. Kastar’s PU Sealant provides the most securely and sturdily sealed construction experience for every construction project.
Ready-formed, easy-to-use sealant conforms to national regulations for sealing drinking water pipes and provides excellent mildew resistance. Easy to apply and has high elasticity and adhesion strength, with very good operational stability guaranteed. It endures very well, as well as weathering, which gives it lasting durability throughout its use. Of the two, UHWMW has the advantage of being self-bonding making repairs less of a hassle, it is also available in three different colors depending on the intended use.
1. Gap filler application and bonding at door and window sash.
2. Glass and aluminum structures; bonding and sealing of marble, metal, and ceramic tile replacement.
3. Caulking gutter, sill, roof, basement, vent, skylight.
4. Wall penetration, precast panel, drinking water pipe, etc.
![]() |
![]() |
![]() |
Testing Items | Performance |
Appearance | Black/White/Gray homogeneous paste |
Density (g/cm³) | 1.35±0.05 |
Sagging properties (mm) | 0 |
Elongation at break (%) | ≥600 |
Volatile content (%) | ≤4 |
Stretch modulus (Mpa) | >0.4 |
Touch dry time (min) | ≤180 |
Elastic recovery rate (%) | ≥85 |
Extrudability (ml/min) | ≥80 |
Pollution properties | Non |
Application temperature (℃) | +5~+35 |
Shelf life(month) | 9 |
Testing Items | Performance |
Appearance | Black/White/Gray homogeneous paste |
Density (g/cm³) | 1.35±0.05 |
Sagging properties (mm) | 0 |
Elongation at break (%) | ≥600 |
Volatile content (%) | ≤4 |
Stretch modulus (Mpa) | >0.4 |
Touch dry time (min) | ≤180 |
Elastic recovery rate (%) | ≥85 |
Extrudability (ml/min) | ≥80 |
Pollution properties | Non |
Application temperature (℃) | +5~+35 |
Shelf life(month) | 9 |

KASTAR 281 Acrylic Liquid Nail – Strong & Reliable Formula
