How do I choose between an extruded jacket and a taped/braided jacket for high-temp environments?

The choice depends on the presence of moisture and mechanical wear:

Extruded Jackets (FEP, PFA, Silicone): Provide a seamless, watertight barrier. They are mandatory for environments involving steam, high humidity, or chemical wash-downs.

Taped/Braided Jackets (PTFE Tape, TGGT, MGT): Provide higher absolute temperature resistance but are not inherently watertight, as moisture can penetrate the fiberglass braids. They are best suited for completely dry, extreme-heat zones like kilns or furnaces.