What is this for?
Depending on what the part is and how large the hole is, patching or puddle-filling the hole with a TIG could be much better ideas than an epoxy.
As far as epoxies go, I'd recommend Master Bond's EP22. SuperMEND is only good for intermittent exposure to 150° F, and it's not terribly strong. If you're a fan of SuperMEND, the same company (GOOP), makes an epoxy called "SuperWELD" that is much more durable and probably wouldn't be a bad choice, either.
Every type of epoxy has different properties. It's kinda hard to recommend something without knowing what the part is and what sort of environment it's gonna see...