Various compounds of PTFE filled with glass, graphite, carbon, bronze, stainless steel, polyimide...
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene that has numerous applications. The best known brand name of PTFE-based formulas is Teflon by Chemours.
PTFE is a fluorocarbon solid, as it is a high-molecular-weight compound consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine. PTFE has one of the lowest coefficients of friction of any solid.
PTFE is used as a non-stick coating for pans and other cookware. It is non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PTFE reduces friction, wear and energy consumption of machinery.
A huge variety of compounds are available on the market; fillers such as glass fiber, carbon, graphite, bronze, stainless steel, polyimide, mica are being used to improve the different properties of Teflon ®.
Brandnames: TEFLON ®, HOSTAFLON ®, ERTAFLON ®, GAFLON ®, FLUON ®