A customer dropped this flange (and cut off piece of tube) with us today. He wanted us to make another flange to the same measurements at this one, but insisted that he could handle welding it himself. On the other side of this flange, the seam was sealed with silicone. Yes, the SEAL welded joint had to also be sealed with silicone so that it would be water tight.
It was all I could do to tell him, “no, please don’t.”
No problem here.
Duct tape. DUH.