Apprentice question
Verify first
Verify before you commit. Cheap to catch now.
Once the lockseam unzips, that damaged area is not a normal sealant fix. Cut back to sound pipe and lock the seam end before installing.
['A recip saw or rough cut can grab the spiral lock and start unzipping it like a ribbon. When that happens, the pipe loses the structural lock that makes it round and strong.', 'Trim past the damaged area with a cleaner cutting method, stabilize the remaining seam end with approved fastener/rivet direction, and replace the section if the seam damage continues into the usable length.']