i just used kapton cause i have a roll here on my bench. It was very cheap from ebay. As far as replacing goes i dont thing it would be needed. Im using the same kapton for the last 2 months and its still perfect.
Signed up just to thank whoever came up with the glass tube ideia. This made this 20USD Titan just tons better for me. Used an old mouthpiece from a broken G5 cheap unit. Used a mesh screen inside the tube and its so easy to clean and refill (just blown on it and put more herb).
Kapton tape is...