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Old 11th Feb 2019, 8:02 pm   #13
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 3,039
Default Re: PTFE tape for transformer insulation

Like PTFE, synthetic rubbers like Viton can decompose to form hydrofluoric acid under extreme heat- I was warned not to handle components from fire-damaged vehicles as things like door seals and engine component gaskets could produce HF residues, with similarly grim bone-eating consequences as outlined above.

Kalee20's account reminded me that (whilst not a smoker myself), we were warned not to smoke whilst using halogen-containing cleaners, such as trichloromethane ("trike") and quite a few others, as the vapour could be decomposed by contact with hot ash into phosgene (carbonyl chloride).
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