4 oz, Hercules propoxy20, seals, mends, bonds, & repairs almost anything, even under water, single stick 2 part epoxy compound mixes quickly & easily & adheres to metals, masonry, wood, glass, ceramics & some plastics, can be applied to damp or wet surfaces, withstands temperatures to 300 degrees Fahrenheit, resistant to many acids, caustics, fuel oil gasoline & other solvents, compression strength 18,000 psi, tensile strength 6,000 psi, when cured in 20 minutes, may be drilled, sanded, filed & painted , conforms to nsf standard 61 & is safe for use with potable water.