PTFE heatshrink tubing is a material that has a broad operational temperature range, excellent dielectric strength, and the lowest coefficient of friction of any other polymer. This heatshrink tubing has a max operating temperature of up to 500 degrees Fahrenheit and is resistant to all common solvents, acids and bases. PTFE also offers a flame retardant quality which makes it great for engine components as well as other applications where flames and fire are a possibility.