PU 25 Sealant & Adhesive
Selsil PU 25 Sealant & Adhesive is a single-component, polyurethane-based sealing material. It cures with moisture in the air. It maintains its elasticity permanently.
- It is easily applied with a gun.
- It is thixotropic.
- It can be painted.
- It does not undergo volume change.
- It is resistant to weather conditions and water.
Technical Specifications
| Chemical Base | Polyurethane |
|---|---|
| Consistency | thixotropic |
| polymerization system | Moisture Curing |
| Density | 1.15 ± 0.03 g/ml |
| Surface Drying | 60-90 min. (23°C and 50% RH) |
| Curing Rate | Min. 2 mm/Day (23°C and 50% RH) |
| Thermal Resistance | -30°C to +80°C |
| Application Temperature | 5°C to 35°C |
| Hardness | 20±5 Shore A |
| can be painted | Yes |
| Elastic Recovery | ≥ 70% (ISO 7389) |
| E100 Module (23°C) | 0.4 N/mm² (ISO8339) |
| Elongation at Break | 500% (ASTM D412) |
| Breaking Strength | 1.3 N/mm² (ASTMD412) |
Packaging Options
- White280 mlBox: 25 pcs
- White600 mlBox: 20 pcs
- Grey280 mlBox: 25 pcs
- Grey600 mlBox: 20 pcs
- Black280 mlBox: 25 pcs
- Black600 mlBox: 20 pcs
Application Videos
Practical ways to use products correctly
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Questions & Answers
Yes. It is used in gaps between the wall and frame when installing timber doors and windows.
Yes. It seals joints in rain gutters and water collection pipes.
It bonds to cement-based materials, brick, ceramic, glass, wood, galvanised sheet metal, painted sheet metal and many plastic surfaces.
Yes. PU 25 is paintable.
Yes. It remains permanently elastic and does not change in volume.
Skin formation takes 60–90 minutes at 23 °C and 50% relative humidity. Under the same conditions, the cure rate is at least 2 mm per day.
Yes. It is resistant to water and weathering. The application temperature range is 5–35 °C.