Is there ANY chemical that can destroy PTFE, or Teflon?
Corrosion Resistant Products, Ltd., with the help of Dupont, has established this source of information on what can and cannot eat teflon.

Here's a list:


Sodium and potassium metal - these reduce and defluorinate PTFE, which finds use in etching PTFE
Finely divided metal powders, like aluminum and and magnesium, cause PTFE to combust at high temperatures


These reactions probably reduce PTFE in a manner that starts:

$$\ce{(CF2CF2)_{n} + 2Na -&gt; (CF=CF)_{n} +2NaF}$$


The world's most powerful oxidizers like $\ce{F2}$, $\ce{OF2}$, and $\ce{ClF3}$ can oxidize PTFE at elevated temperatures, probably by:


$$\ce{(CF2CF2)_{n} + 2nF2 -&gt; 2nCF4}$$

Similar things can occur under extreme conditions (temperature and pressure) with:


Boranes
Nitric acid
80% NaOH or KOH
Aluminum chloride
Ammonia, some amines, and some imines