What is a "Teflon" (PTFE) jacket?

Is this material the same as the non-stick coating on pans? Can it resist acid and alkali corrosion?

Yes, your understanding is spot on.

I. Relationship Between Teflon (PTFE) and Non-Stick Coatings

Chemically, they are the exact same material.

  • Core Chemical Composition: “Teflon” is the