I had a 100 year old house that had a crack in the sewage pipe in the upstairs apartment.
This is a old fashioned pipe with lead soldering the joints together.
It developed a crack.
A plumber wanted to rip the whole stack out and replace with plastic. For several thousand dollars of course.
I sealed the crack with JB weld, water weld, and it lasted for 6 years, and did not drip at all.
I recently sold that house, but I would imagine it is still holding.