MasterSeal 590 5 Gal. Hydraulic Cement

Formerly known as Waterplug Hydraulic Cement, MasterSeal 590 is a quick setting hydraulic cement used to instantly stop running water or seepage through holes or cracks in concrete and masonry, and as an anchoring cement to secure bolts or posts in horizontal concrete or masonry. It expands as it sets to lock into place even under constant water pressure.