Silicone works just as well as the JB Cold Weld line of products. Apply once and it's there forever. I have used JB products and they do exactly what they say they do and maybe even better.
Loctite Red 262 High-Strength Threadlocker - 1.69 fl. oz. Bottle (26231)
11 Review
Permatex 82180 Maximum Resistance Silicone
9 Review
π΄ Permatex 81160 High-Temp Red RTV Silicone Gasket: Reliable 3 oz Solution
9 Review
Black POR-15 Patch - 4 oz Filler & Seam Sealer with Ultimate Adhesive Properties - Repairs Holes, Cracks in Steel, Wood, and select Plastics - Reinforces Weakened Metal
12 Review