PTFE gaskets are made of synthetic fluoropolymer of tetrafluoroethylene consisting completely of carbon and fluorine. It is innately hydrophobic (repelling water and water-containing substances) and has one of the lowest coefficients of friction against any solid.

PTFE Gaskets are resistant to a wide range of chemicals, including acids, bases, and solvents. Its heat resistance makes it suitable for use in high-temperature applications. PTFE has a low coefficient of friction, making it the ideal material for use in applications where there is a lot of movement.