DM- flex 259
DM-flex 259 Low-Modulus Construction Polyurethane Sealant
DM- flex 259
DM-flex 259 Low-Modulus Construction Polyurethane Sealant
Flexible Sealing for Precast Concrete and Moving Joints
DM-flex 259 is a one-component, low-modulus, moisture-curing polyurethane sealant and adhesive with permanent elasticity. It is designed for moving joints, especially in precast concrete construction.
Key Benefits:
• Low-modulus formulation for precast concrete construction
• Easy application with one-component formulation
• Strong adhesion to multiple substrates
• Non-corrosive with excellent weather and water resistance
• Overpaintable after compatibility testing
• Meets the requirements of ISO 11600
• Easy application with one-component formulation
• Strong adhesion to multiple substrates
• Non-corrosive with excellent weather and water resistance
• Overpaintable after compatibility testing
• Meets the requirements of ISO 11600
Performance Highlights:
• Joint movement capability: 25%
• Tensile strength at break: >1 N/mm²
• Elongation at break: ≥800%
• Tack-free time: 4–6 hours
• Tensile strength at break: >1 N/mm²
• Elongation at break: ≥800%
• Tack-free time: 4–6 hours
Applications:
• Precast concrete construction
• Balcony parapets, bridge cantilevers, and retaining walls
• Subways and other moving joints
• Window frames, doors, and skirtings
• Wall and floor joints
• Balcony parapets, bridge cantilevers, and retaining walls
• Subways and other moving joints
• Window frames, doors, and skirtings
• Wall and floor joints
Main Technical Specifications:
| ITEM | ITEM NO | RECOMMENDED USE | COLORS | TACK-FREE TIME | SHORE A | TENSILE STRENGTH | ELONGATION AT BREAK | MOVEMENT CAPACITY CLASS |
|---|---|---|---|---|---|---|---|---|
| LOW-MODULUS PU SEALANT | DM-flex 259 | Moving joint sealing | White, Grey, Black | 4–6 hours | Approx. 25 | >1 N/mm² | ≥800% | 25% |
Why Choose DM-flex 259:
Its low modulus, high elongation, and 25% movement capability make DM-flex 259 suitable for durable sealing of moving construction joints.
Packaging Options:
• 600 ml sausage
• 300 ml aluminum cartridge
• 23/180 L barrel
• 300 ml aluminum cartridge
• 23/180 L barrel