Thanks for sharing! This was an amazing read.

I would think most of those applications should be able to use an alumino-silicate based refractory ceramic fiber. Kaowool is one brand, but there are many like it.

It has its own problems in regard to silicosis but that’s only after it’s been exposed to higher temperatures and are easily mitigated with most particulate respirators. Also, if I remember correctly, the silicosis threat requires very long term exposure. I do know of at least one company developing a silca-free version too, which would eliminate the silicosis threat.

I use it in glass manufacturing with temperatures 2000°F+ so I’m quite confident it’ll hold up to any application where asbestos is being used.

EDIT: It will hold up in any application unless there’s a problem with certain chemical reactivity I should say*. I don’t expect that would be a common problem, but I’m sure it could happen. I’m admittedly not well versed on asbestos since I’ve never tried speccing it out for anything, haha.