J-B Weld MarineWeld is a specially formulated 2-part adhesive system that provides strong, lasting repairs for bonding different or similar surfaces, such as metal, SMC fiberglass and others. At room temperature, MarineWeld sets in 5-minutes and will be white at full cure. It may then be tapped, filed, sanded and drilled, retaining full strength above or below the water's surface. MarineWeld has a 1:1 mixing ratio and tensile strength of 2350 psi. Features: No mess, no waste cap screws on 1-way to eliminate accidental mixing and ensure it won't dry out Specifically formulated for marine applications Works on multiple surfaces Specially formulated 2-part adhesive system with high strength and elasticity Great for boats, personal watercraft, deck and hull accessories and more Tensile strength of 2350 psi for a strong, permanent bond Once cured, product is waterproof, UV resistant and has 55% elongation White at full cure