I believe JB Weld can stand the heat of a Titan Missle. This stuff has been around for a long time and is well proven for what it's intended to do. I'm 50+ yrs old, my dad used to use it on his cars. I remember him using it to fix a stripped thread in a block, filled the hole, tapped it and put everything back together. Car ran for 10 yrs afteer that. It's pretty high quality stuff and available at any hardware store.