sump with leak.

[jrsatx20]

Which weld on do I use to seal up a leaking sump. Small leak in corner and baffle loose.

[Europhyllia]

is there a little gap? I think at the meeting they said if you need a filler type Weld On you'd use Weld-on 16. If you don't need the filler then Weld-on 4 or Weld-on 3 would work better

[jrsatx20]

Its both. The corner drips so guessing 3 would work. Baffles there's more water rushing through the sides so I guess 16 for that.

[txav8r]

The main thing is to get it clean before you try to seal it up.
Karin is correct. Weld-on 4 for seams or 16 for gaps.