Cordobond Sealer is a three-component, high-strength repair material, consisting of resin, activator and reinforcing filler. When mixed together, a fast chemical reaction takes place to produce a tough, hard patch. The material has excellent resistance to water, oil, gasoline, alcohol, acids, gases and other contaminants. Sticky material for sealing small holes, cracks and leaks around tank and pipe fittings where pressures are low. Can be applied by trowel or putty knife.