When concrete is saturated with or submerged in water, use these epoxies to permanently set threaded rods, studs, and rebar. They form a weather-resistant chemical bond that seals out moisture and resists vibration and dynamic loads better than mechanical anchors. Warning: Allowable pull-out strength is 25% of ultimate values or less, as required by building authorities. Use a mixer nozzle and dispensing gun (dispensing gun sold separately) to simultaneously mix and dispense adhesive.