Prime Flex 900 XLV

Prime Flex 900 XLV is a high-performance, water-activated polyurethane injection resin engineered for sealing hairline cracks and actively leaking joints in concrete structures. With its low viscosity (250-350 centipoise), this hydrophilic, single-component grout penetrates deep into cracks, reacting with water to form a closed-cell, watertight foam that expands up to 600%.

Ideal for injection under pressure through ports, Prime Flex 900 XLV is designed for permanent waterproofing of concrete tanks, dams, below-grade walls, and elevator service pits. Its high flexibility, tensile elongation (350%), and tear resistance (21 lbs/inch) ensure that the seal remains intact even with temperature fluctuations and structural movement. The single-component formulation eliminates the need for catalysts or accelerators, making it easy to use and cost-effective.

Key Benefits of Prime Flex 900 XLV:

• Single-component, moisture-reactive formula—no catalyst required
• Ultra-low viscosity (250-350 centipoise)—penetrates tight cracks effectively
• Expands up to 600% (unconfined)—ensures complete water blockage
• High tensile strength (450 psi) and tear resistance (21 lbs/inch)
• Remains flexible to accommodate movement and thermal expansion
• Environmentally safe once cured—low shrinkage (<2%) ensures long-term stability
• Pumpable directly from the pail—no need for pre-mixing
• Durable, permanent solution for active water leaks

Common Applications:

• Water treatment tanks and reservoirs
• Dams and hydroelectric structures
• Below-grade concrete foundation walls
• Elevator pits and service shafts
• Crack injection in parking garages and tunnels

💡 Available in 1-gallon jugs (cases of 4), 5-gallon pails, and 2:1 Quick Mix cartridges.