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Low viscous, Single Component, hydrophobic, MDI-based, polyurethane injection resin without catalyst. It only reacts with water and forms a Flexible Polyurethane Foam. This product can be injected pure directly into a leaking crack, fracture or joint. After injection has taken place, the will foam to expand and fill the void, forming a tight, impermeable elastomeric seal, stopping the water flow.
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RPU 500 reacts with water forming a Flexible Polyurethane Foam
• Due to its flexibility, the foam absorbs somewhat the movements of the crack.
• Penetrates deep in fine cracks.
• Reacts with water with the formation of carbondioxyde gas. This gas produces a swelling pressure and the resin expands to a foam sealing all water penetration
• Free expansion: 2700 %
• Chemically resistant against water, weak acids and alkali, most organic solvents
• Excellent adhesion to mineral construction materials (such as concrete, cement, brick), metal and certain plastics,
