Thermagel

Has anyone used Thermagel or equivalent and if so, do you trust it around a TXV or sight glass over the a wet rag treatment?

I've used a product called pyrocool and never had an issue used it on exvs and mag valves with success

I've use pyrocool too, its very good but takes a bit of cleaning up after, especially if its dried out a bit. Have used it to protect painted panels when brazing next to them.

Prefer wet rags for general brazing, have a load of those yellow cotton dusters in a small tub of water.

I'll go along with Monkey here, good stuff but not always the only choice.