PTFE sheets are made in a way of compression molding of powder form materials including various inorganic fillers and poly tetra fluoro ethylene which is a high molecular compound of fluorine atoms or atom groups that are combined with carbon atoms in a lateral chain form.
Pure PTFE is usable only at low pressure and under 150 ℃, but as the binder is added to it, it can resist high pressure and high temperature up to 260 ℃.
Various types of fillers can be inserted into it. The outstanding chemical resistance of PTFE is effective in almost all fluids.