ULTRA CON is self-reacting type Hydrophobic Type 2 Component Polyurethane Resin which is invented by using polyether polyol. Grouting Chemical for Concrete It is applied to waterstop leakage section and it is high strength reinforcement material that reinforces dry crack caused by defect of concrete structure and buildings. Foam rate that reacts with water is minimized. This is restrained non-discharge & low-discharge waterstop material that hardened foam is harder than normal polyurethane foam and also density is high. Therefore, it does not have defects caused by deformation and it waterstop effects last semi-permanently. It provides strong physical strength after hardened. Furthermore, low viscosity and strong penetration ability brings excellent adhesive power even on the wet surface. It is non-elastic polyurethane reinforcement material.