Teflon ball, PTFE ball precision achieved +/-0.02 to 0.001 mm, not gather the mold line, none the fragments, the surface is smooth, high-tech, the high quality, provides for the high precise customer selects. Teflon ball, PTFE ball Characteristic: Very low friction coefficient, Bears the high temperature, has extremely good bears the climate, bears the ozone and bears the chemical properties, bears the petroleum. Teflon ball, PTFE ball uses in astronautics, the automobile, the medical service, the drugs manufacture, the satellite, the valve, pump, the bathroom, the electron, the electric appliance, and so on industry. Teflon ball, PTFE ball size: 5.00mm; 5.50mm; 6.35mm; 6.5mm; 7.14mm; 7.93mm; 9.52mm; 10.0mm; 10.32mm11.11mm; 12.7mm; 14.28mm; 15.87mm; 17.46mm; 19.05mm; 22.22mm; 25.4mm; 30.0mm; 35MM; 40.0mm; 50.0mm; 55mm; 60mm; 65mm; 70mm; 75mm; 80mm.