PFA insulated wire shielded with drain wire is commonly used in medium temp application e.g. Power generation, Nickle / Electro Plating, Petro Chemical plants. It has fair abrasion and excellent moisture resistance compare to the other insulations.
Type K thermocouple wire with Alumel and Chromel conductors. Most common type of thermocouple wire used for temperature measurement, std ANSI color code for thermocouple conductors (Yellow/Red) with brown jacket.