Polytetrafluoroethylene (PTFE) is a remarkable engineering material known for its exceptional glass transition temperature (Tg) of -124°C (-191.2°F). This low Tg indicates that PTFE remains flexible and pliable even at cryogenic temperatures, a property that contributes to its versatility in applications such as sealing, insulation, and non-stick coatings. PTFE’s unique combination of low Tg and extraordinary chemical resistance, thermal stability, and low friction coefficient makes it a highly sought-after material in industries ranging from aerospace to medical devices.
