Flex Seal Extreme Putty Epoxy delivers extraordinary strength and unmatched versatility with every use. Just one stick of putty can hold up to 4 tons. Strong bond is ideal for overhead, vertical and hard-to-reach repairs. It can even provide reliable bonding strength when applied to wet surfaces, and even under water. Highly-durable, heat-resistant formula withstands temperatures up to 350-degrees Fahrenheit and creates a waterproof barrier once cured. It can be molded and shaped, filed, sanded, tapped, drilled and painted to effectively meet your needs. Fast-setting putty cures in just 15 minutes. Putty epoxy is great for filling gaps and cracks on multiple surfaces, bonding to metal, copper, plastics (PVC, ABS), wood, concrete, stone, brick, ceramic, tile, fiberglass and more.