KASTAR 119 Low modulus PU sealant for construction joints
Low modulus, Flexibility, Construction joints, Excellent Anti-movement
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KASTAR119 Polyurethane Construction Sealant is a one-component gun-grade polyurethane-based construction sealant, it is of low modulus and cures by reaction with atmospheric moisture to form a soft rubber-like material with excellent elastic and adhesion strength.
OEM & ODM
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Technology datasheet
| Testing Items | Performance |
| Appearance | Black/white/Gray homogeneous paste |
| Density (g/cm³) | 1.35±0.05 |
| Sagging properties (mm) | ≤1 |
| Elongation at break (%) | ≥600 |
| Volatile contents (%) | ≤4 |
| Stretch modulus (Mpa) | ≤0.04 |
| Touch Dry time (min | ≤180 |
| Elastic recovery (%) | ≥80 |
| Extrudability (ml/min) | 80 |
| Pollution properties | Non |
| Application temperature (ºC) | +5~+35 |
| Shelf life (month) | 9 |
Advantages
Uses
- KASTAR119 is suitable for most building joints, including perimeter caulking of doors and windows.
- Expansion joints.
- Joints in pre-cast panel.
- External walling, curtain wall joints.
- Skylights, smoke vents.
- Other structural sealing for areas with structure movement.
Clean up
Clean and dry all surfaces by removing foreign matter and contaminants such as oil dust, grease, frost, water, dirt, old sealants and any protective coating. Dust and loose particles should be cleaned.
Packaging
310ml cartridge, 20 pcs/carton
600ml/400ml sausage, 20 pcs/carton
Application
Minimum application temperature: 5℃.
It should be dispensed from either the cartridge or sausage by means of a caulking gun. Pierce the membrane at the top of the cartridge and screw on the nozzle. Cut the nozzle to give the required angle and bead size. Place the cartridge in an applicator gun and squeeze the trigger. For sausages, a barrel gun is required, clip the end of the sausage and place it in the barrel gun. Screw end cap and nozzle on to barrel gun. Using the trigger extrude the sealant, to stop depress using the catch plate.
Advice
- For common occasions, after cleaning out the surface with the organic solvent, this product can be used directly.
- Please construct by application instructions strictly, failure of stickiness may be caused by any operation disobeying construction techniques.
- This product is innocuous after curing completely, but before set, please avoid contacting with eyes and skin. In case of eye and skin contact, wash immediately and thoroughly with soap and water. See a doctor immediately if it is serious.
Priming
Activators and/or primers is not required.
