SealBoss Flexgel Hydrophilic Injection Gel Grout

FlexGel Hydrophilic Injection Gel – Water-Activated Polyurethane System

This flexible, water-activated polyurethane gel is a low-viscosity, hydrophilic injection resin formulated for leak sealing, curtain grouting, and soil stabilization. When mixed with water, it forms a durable gel or foam, depending on the ratio, and is ideal for deep penetration in fine cracks, pores, or underground structures.

Key Features:

• Water-activated, flexible polyurethane gel system

• Forms gel or foam based on mix ratio and pressure

• Ultra-low viscosity (as low as 50 cps) for superior penetration

• Certified for potable water contact (NSF/ANSI 61)

• Cures in dry or damp conditions

• Hydrophilic properties for strong mechanical bond in wet environments

• Compatible with both single-component and multi-ratio pumps

• Non-regulated for transport

• For professional use only

Applications:

• Leak sealing in tunnels, manholes, sewers, utility boxes, and pipe intrusions

• Curtain grouting and bladder injection behind below-grade structures

• Soil stabilization in loose or granular soils

• Joint and crack sealing in concrete or masonry

• Potable water tank repair and infrastructure waterproofing

Mix Ratios & Behavior:

• 1:4 to 1:15 (resin:water) → forms a flexible injection gel

• 1:1 to 1:2 → creates a closed-cell flexible foam under pressure

• Gel time: approx. 1–3 minutes, depending on temperature and saturation

• Less water = stronger gel consistency

Installation Notes:

• For curtain/bladder injection, follow a staggered checkerboard drilling pattern (approx. 50 cm apart).

• In low-moisture zones, water may need to be pre-introduced to trigger reaction.

• Use multi-ratio pumps for precision or single-component equipment when moisture in substrate is sufficient.

Hydrophilic vs. Hydrophobic:

Hydrophilic resins absorb water to create flexible seals deep within micro-cracks and pores, forming a mechanical bond. They are ideal in damp or saturated concrete. Unlike hydrophobic foams, hydrophilic gels bond more chemically than physically, reducing reliance on injection pressure.