PTFE is uniquely suitable for many laboratory applications because of its almost total chemical inertness and its wide range of working temperatures with an upper limit of about 290°C. Additionally, PTFE has a built-in safety factor since the material remains rigid if heated above its notional melting point of 327°C, and articles in PTFE do not melt and deform if overheated although some decomposition will commence at about 400°C.
PTFE is the most important member of a family of fluoropolymers which are characterized by exceptional chemical inertness and a wide range of working temperatures.
PTFE is processed using the technology of powder forming with final sintering at about 390°C. Because of the method of processing formed PTFE may contain microscopic voids which, under some circumstances, may be penetrated by certain chemical reagents - no reaction will occur, but some discoloration may be noticed. Likewise, because of the method of processing, some shedding of the surface may occur at PTFE-PTFE interfaces.
PTFE is one of the best non-stick materials known.
PROPERTIES OF PTFE: