Seal Injection PU-101

What It Does

Seal Injection 101 is a fast-reacting polyurethane injection resin that reacts with water and expands into a flexible, closed-cell hydrophobic foam, permanently sealing cracks, joints, and voids in concrete. When water is running — this is the fix.

Where to Use

• Basement and retaining walls - Seal water ingress in below-grade structures
• Foundations and raft slabs - Permanent waterproofing of structural foundations
• Tunnels and underpasses - Stop active leaks in underground infrastructure
• Water tanks and silos - Seal joints and cracks in water-retaining structures
• Sewage systems and manholes - Waterproof underground utility structures
• Dams, canals and below-grade structures - Heavy-duty waterproofing under hydrostatic pressure

Why Contractors Choose It

• Reacts instantly with water - No waiting, starts working on contact
• Stops running water leaks fast - Gel time of approximately 10 seconds
• Low viscosity for deep penetration - Reaches into the finest cracks and voids
• Flexible, closed-cell waterproof foam - Maintains seal even with structural movement
• Expansion up to 40x - Fills large cavities and voids efficiently
• Works under hydrostatic pressure - Effective even against active water flow
• Resistant to fungi and microorganisms - Long-lasting performance in damp environments

Application Process

1. Clean crack and install packers - Prepare the injection points along the crack line.

2. Seal packer periphery - Ensure the area around each packer is properly sealed to prevent resin escape.

3. Mix full unit at low RPM - Combine Part A (10 kg) and Part B (1 kg) using a low-speed mixer.

4. Inject using PU injection pump - Use a suitable injection pump to deliver the mixed material through the packers.

5. Start low pressure, increase gradually - Begin injection at low pressure and gradually increase to ensure proper penetration and filling.

Important: Use mixed material immediately. Do not delay after mixing.

Best For

• Emergency leakage stoppage - Fast response to active water problems
• Active water cracks - Designed specifically for wet conditions
• Permanent waterproof sealing - Long-term solution, not a temporary fix
• Professional injection contractors - Trusted by experienced waterproofing specialists