Amazing GOOP 5300031 Marine Epoxy Paste Kit - 4 fl oz Fast drying  sets in 5 minutes and dries completely in 20 minutes Non sag  great for overhead or vertical applications Waterproof  may be applied under water Chemical resistant, non-shrinking Heat resistant up to 190f, can be sanded, drilled, painted and sawed once cured Non-sag, two-part epoxy filler formulated to offer exceptional high impact resistance and bond to most substrates Resists water, chemicals, fuel, alcohol, grease Use above and below the waterline and remains waterproof after curing Sets in 5 minutes and dries completely in 20 minutes Made in the USA