As you can see, PTFE is composed of carbon and fluorine. Carbon-fluorine and carbon-carbon bonds are among the strongest in single bond organic chemistry. This accounts for many of its properties. Because of the strong bonds, much thermal energy must be used to break down the material. It is also nonpolar; this leads to its chemical inertness, as the diagram demonstrates, and the fact that its electrical resistance is over 1018 . The low coefficient of friction of Teflon results from low interfacial forces between its surface and another material and the comparatively low force to deform. A good table of PTFE's properties follows.