Sure Plug

SurePlug is a fast setting, non-shrinking, hydraulic
cement compound, formulated to stop leaks in all
types of concrete or masonry surfaces; and is
particularly designed to instantly stop the flow of
running water. SurePlug requires the addition of
only water before plugging and sealing cracks.
Available in three set times of 30 seconds (Fast
Set), 1 minute (Regular Set), and 3 minutes (Slow
Set).

15-Lb. Can