cement
basf thoro consumer products 5 gallon waterplug hydraulic cement t1663
stops running water instantly non shrinking expands as it sets and wont pull away from edges of patch will set up under water sets fasts 3 5 minutes exceptional structural strength dry powder form just add water easy to mix and put in place requires no special equipment nontoxic when set nonmetallic will not rust out or deteriorate length 12 5 width 13 75 height 12 5 sku jnsn43399