A fluoroplastic that is resistant to practically every known chemical or solvent in combination with the highest useful temperature limit of commercially available plastics. PTFE has a melt point of 620°F (327°C), a useful temperature range from -436°F (-260°C) to 500°F (260°C), high impact strength, and exceptionally low coefficient of friction. Usual processing techniques like injection molding are not possible with PTFE due to a very high molecular weight which results in a melt viscosity about 1 million times higher than is acceptable for conventional thermoplastics. PTFE resin is pressed into shapes under high pressure at room temperature and then heated to 700°F (371°C) to complete the molding (sintering process) and adjust the crystalline content.