... 2.After polymerizated bulge, good extensibility, flexibility, impermeab Injection Polyurethane curing agent APPLICATION:Applicable for plugging of the leakage of tunnels, ... extensibility, flexibility, impermeability andlow temperature resistance;3.After curing, meeting water can continue to expand and further play ... life of 6 months;3.packaging : 10kg / barrel. Injection Polyurethane curing agent