PTFE (Polytetrafluoroethylene) is a type of Teflon known for its exceptional heat resistance, capable of continuous use above 260°C, with a maximum temperature of 290-300°C. It has a very low coefficient of friction, excellent wear resistance, and outstanding chemical stability.
FEP (Fluorinated Ethylene Propylene) is another type of Teflon that forms a seamless film when melted during baking. It offers excellent chemical stability and non-stick properties, with a maximum working temperature of 200°C.
PFA (Perfluoroalkoxy) is similar to FEP in that it also forms a seamless film when melted. PFA, however, has a higher continuous use temperature of 260°C and greater toughness, making it particularly suitable for applications requiring resistance to adhesion and chemicals in high-temperature conditions.
ETFE (Ethylene Tetrafluoroethylene) is a copolymer of ethylene and tetrafluoroethylene, known for its toughness and durable coatings. It exhibits excellent chemical resistance and can operate continuously at temperatures up to 150°C.
PTFE Heat Shrink Tubing in Medical Applications
Medical-grade PTFE heat shrink tubing is commonly used in medical applications due to its unique properties. PTFE, a fluoropolymer, is renowned for its high temperature resistance, chemical inertness, and non-stick characteristics.
The tubing’s heat shrink properties mean it can be heated to a specific temperature, causing it to shrink and conform tightly to the shape of the object it covers. This makes it ideal for medical devices that require close, conformal fits.
Medical-grade PTFE heat shrink tubing is typically used in catheters, endoscopes, and other medical equipment where biocompatibility and sterility are crucial. It is also employed in applications requiring high temperature and chemical resistance.