LOWE'S Epoxy Putty
 

Is this stuff safe?

I use it. I think it is the loctite brand.

I use it also, marine grade

but I don't think it matters

a friend of mine uses it. Has for a while... swears by it.

i don't specifically use that brand but i do use a brand at lowes called aqua mend.. it's in the epoxy glue isle.