As stated above, you shouldn't count on the tape for sealing. My liner came with a small roll of tape to secure the insulation. After making the connection I pulled the insulation over the joint and wrapped it with the tape. It held up just fine...Nashua 324A Aluminum Tape
Is this the correct tape to seal the liner to the stove pipe?
No. There is no metal tape that is proper for this application that I know of. This tape is meant for ductwork, not the high temps a flue will see. It is rated at -10 to 200ºF. The adhesive on the tape will be toast after a couple fires. I would peel it off and not seal the connection or use some furnace cement and work it in.
ok, I trust you,
but why why why then did my installer just do this to me.
ok, I trust you,
but why why why then did my installer just do this to me.
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