INSTAbond® N-QS5 -- A two-part, eopxy compound that cures quickly at room temperature. INSTAbond® N-QS5 has high compressive strength, making it very suitable for repairing pitted metal and steel surfaces that are subjected to high pressure. The mix ratio of INSTAbond® N-QS5 resin to hardener is 1:1 by weight and volume. When fully cured, the material produces a durable, resillient bond that is resistant to many solvents and adverse environments. INSTAbond® N-QS5 was designed primarily for ferrous and aluminum substrates.