J-B Weld 8272 Marine Weld
JB Weld's marine epoxy is specifically formulated for situations where metal parts need to be bonded together in a "cold weld" or to other surfaces and remain bonded even underwater. Although it is a marine epoxy and is waterproof once cured, it's not intended to be applied underwater. This is a high-strength epoxy, with a tensile strength of 3690 PSI. The epoxy sets to a grey color in four to six hours and is fully cured in 15 to 24 hours. Once cured, it can be shaped, filed, sanded, machined, drilled and tapped. This selection comes packaged in separate tubes.