PC Leakinject 2K FLEX 6811 LV is a two-component, MDI-based, elastic, polyurethane injection resin with very low viscosity. The resin is developed for the water sealing of both wet and dry cracks in walls, floors, concrete structures, underground structures and also suited for injection hoses. The resin does not need water to react. Without water the material becomes a flexible seal. With water, the material will slightly foam.