Polytetrafluoroethylene (PTFE) commonly known as the "king of plastic". With excellent chemical stability, corrosion resistance, sealing, lubrication but no high viscosity, electrical insulation and good anti-aging endurance ,it can work under +250 to -180 temperature for a long time, PTFE products has played important role in the chemical industry, machinery, electronics, electrical appliances, military, aerospace, environmental protection and bridges and other areas of the national economy. PTFE advantages: high temperature resistance -- working temperature up to 250 . Low temperature resistance -- with good mechanical toughness; even if the temperature dropped to -196 , it also can maintain 5% elongation. Corrosion resistance showed inert to most chemicals and solvents ,it can resist acid alkali, water and organic solvent. Weather resistant best aging life in plastics. High lubrication has the lowest friction coefficient in solid materials. No adhesion with minimal surface tension in solid materials, no adhesion to any material. No poison -- has physiological inertia, it caused no adverse reaction when implanted in body as artificial blood vessels and organs for a long time.
