The SAKRETE 10 lb. Leak Stopper Cement is a versatile solution for repairing leaks in concrete or masonry walls and floors. With a fast-setting hydraulic formula, it sets in just 1-3 minutes and has a compression strength of 3,000 psi. Suitable for both interior and exterior use, it can effectively stop water flow in basements, swimming pools, elevator pits, conduits, sea walls, tunnels, storm drains, foundations, and docks. This cement meets ASTM C109 and 191 standards and can be applied both above and below ground, even underwater. Perfect for horizontal and vertical repairs with an initial set time of just 1-3 minutes.

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