I was wanting to get this thing running so I actually used metal tape that I had on hand. Figured I could redo easily with silicone tape if the al tape leaked. Used the high temp fire block sealant stuff on the appliance connector. No leaks I can tell so far. Only issue was I'm not able to seal a couple of the connections to the chimney liner... The ones that are inside the thimble. But can't detect any leak there so far, and the small gap between the 3" to 6" chimney adapter and the 8" thimble it passes through I was thinking about stuffing with Roxul batting to at least seal off the thimble from the house interior. I had already done that deeper in the thimble around the snout of the tee to seal the chimney off from the house when using my Shelburne there, but now I have 2 connections just before that point that I can't really get at to seal.
