well need more help with exhaust lol

so i got my new caty and fitment is spectacular and so is the weld quality, but it has 2 o2 bungs and i have one on the dp, my question is can i loctite these shut with high temp heat cycling loctite. it didnt specify what temp it was good to but i imagine it would work fine, i used it on my header to dp bolts and so far so good, but i havent ran the car yet, so i wont know for sure till then, i just need some imput if this is safe or not..i just dont want exhaust leaks or the little bung caps to fall out when im driving