I recently acquired a Kifaru 4-man tipi and medium stove on here. I'm considering installing a stove-jack into a new Vango Peace 800 tipi (the poly-cotton one, so ideal for a stove) so I can use the kifaru stove for when I want to hold a barn-dance inside in the winter (no, I'm not actually into barn-dances, but you get my drift...)
Anyway, I've seen that most of the stove-jacks for sale have an inner silicone heat-shield. However, two things give me pause for concern. First of all, I have tended to use a silicone mat when using an alcohol stove in my tent to protect the ground-sheet - after taking all due safety precautions re ventilation etc. However, when I used it at the last meet to protect the ground when burning my wild-stove gasifier wood-stove, it burnt right through it (admittedly after several hours full-burn). Secondly, the stainless-steel kifaru is a pack-down stove with lightweight rollable SS chimney, and is renowned for getting very hot indeed.
So, would the silicone stove jack be able to survive those temperatures, or would it melt like my silicone mat - which would not be a good thing for the tent material!