Solvent Free PU (Polyurethane) Windscreen Replacement Adhesive Sealant
Fast Cure High Adhesion
1. Description
It is a one component, moisture-curable solvent free polyurethane adhesive sealant for windscreen/windshield fixing and replacement. It is non-sag, of high bonding strength. And it has good vibration and weather resistance. The product is manufactured under ISO9001/ISO14001/TS16949.
2. Characteristics
One component, easy to apply
No sagginess, easy to apply in vertical surface
Fast cure
Good adhesion without primer
Good weather resistance, vibration and fatigue resistance
3. Application
It is applied for bonding and sealing of windshields, side window glass for various kinds of vehicles in the automotive aftermarket.
4. Application Note
Clean surface to make it clean, dry, free of oil or grease.
Apply the Comensflex Activator and Comensflex Primer on the surface if needed.
The sealant cures with the moisture in the air. The lower the temperature is, and the lower the humidity is, the slower the curing rate is.
The suggested work temperature is 5-35° C, the best work temperature is 15-25° C.
5. Property of the Sealant Layer
The product cures with the moisture in the air, which forms a high strength elastic structural sealant layer.
The sealant layer is resistant to water, weak acid, neutral cleaner which do not contain chlor-alkali. It can shortly resistant to fuel, oil, fat, and crude oil. But it should be avoided strong acid, lye, bleach and other organic solvent.
The sealant layer can be trimmed before curing. But after curing, it can only be removed by cutters.
6. Packaging
Cartridge: 310ml/cartridge, 20 cartridges/carton
Sausage: 400ml/sausages, 600ml/sausage, 20 sausages/carton
Drum: 200L/drum
7.Storage
When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 9 months.
The shelf life of polyurethane sealant is related to the temperature and humidity of the environment. The recommended storage temperature is 5-25° C, humidity is <50% RH. It is strictly prohibited that the transportation or storage temperature is over 30° C or the humidity is over 80% RH. And high-temperature container transportation is prohibited as well. In the long-time high temperature and high humidity storage environment, the product is easy to get viscous, extrusion will be deteriorated and shelf life will be shortened.
8. Main Techical Data
| Appearance | Uniform Paste |
| Color | Black |
| Density | 1.25 ± 0.05 kg/l |
| Cure mechanism | Moisture-curing |
| Tack-free time* | 30~60 min |
| Rate of cure* | ~3.5 mm per 24 hrs |
| Shore A hardness | 60±5 |
| Tensile strength | ≥4 N/mm 2 |
| Elongation at break | ≥450% |
| Tear strength | ≥10 N/mm |
| Tensile-shear strength (without primer) | ≥2.0 N/ mm 2 |
| Glass transition temperature | -45°C, approx. |
Service temperature (continuous)
Short – term (up to 48 hrs) | -40°C to +90°C
130°C |
