Various types of PTFE expansion joints are used predominantly used within the chemical and pharmaceutical industry, they are, however, also suitable for drinking water, oil and district heating and wastewater).
Polytetrafluorethylene (short PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has a high durability to chemicals such as acid, solvents, and basic substances.
These expansion joints are used either as pure PTFE bellow expansion joints or alternatively as a combination between rubber expansion joints with PTFE facing. We have 8 different types, so we have one for you too.
PTFE has high weather resistance and high impact resistance. The application temperature is typically between -200 and +260 degrees C
PTFE was accidentally discovered in 1938 by Roy J. Plunkett while he attempting to make a new chlorofluorocarbon refrigerant, the tetrafluoroethylene gas in its pressure bottle stopped flowing before the bottle’s weight had dropped to the point signalling “empty.” He found the bottle’s interior coated with a waxy white material that was oddly slippery. Analysis showed that it was polymerized perfluoroethylene, with the iron from the inside of the container having acted as a catalyst at high pressure. He saw the possibilities in this product and registered the Teflon trademark in 1945.