EverFlon ®PTFE Dispersion Fine Powder F500 is a soft white polymer made from a water-based dispersion of PTFE. These fine powders have the lowest coefficient of friction, highest heat resistance, chemical resistance, electrical properties and non-stick properties of all fluoropolymers. It has the unique ability to shear a lubricating paste by extruding it into a bonded fiber matrix with useful structural integrity. EverFlon ®PTFE F500 is designed for machining at medium and high pressure rates from 100:1 to 600:1. It is particularly suitable for the production of high quality tubes, spiral tubes and wire coatings. This grade is also well suited for post-processing techniques such as flanging, welding, blow molding and turning. Processing suggestion EverFlon ®PTFE F500 is extruded using liquid processing AIDS such as naphtha. During the paste extrusion process, the powder is mixed with a lubricating agent and then compressed under light pressure (1.5-2.0 MPa[220-290 psi]) into a cylindrical pre-formed bad material. The preformed blank is placed into the barrel of the paste extruder, where the composition is passed through a finishing die under high pressure to produce foaming, tubing or wire coating. After extrusion, the product has a low density but coherent fiber structure. PTFE F500 is usually processed under heat in a step-by-step process into solid resin products, such as tubes. Heating is carried out in two steps, either simultaneously with extrusion or separately. Usually the lubricant must be removed first by heating in a temperature range of 100-300°C(212-572°F). A sintering step is then performed to melt the resin above its melting point of approximately 342°(648°F) and produce a non-porous solid PTFE resin.