Ocean Accessories Stay Afloat Plug 8oz. . Used by first response emergency marine rescue operations Stay Afloat is a non-hazardous hand-applied moldable putty-like material that instantly plugs leaks in boat hulls and marine fittings. For above- or below-the-waterline use it is a quick and easy way to plug a leaking thru hull or crack in the hull. The one-part formula is applied by hand directly from the container with no mixing required. Formulation Moldable polymer Recommended Usage Stopping water leaks above and below the waterline Material Incompatibilities Not recommended for inflatable boat inflation chamber repair Removal Mechanical removal