... 2.high quality with lowest prices 3.different grades in good quality There are two types of PTFE ... 16, 18, 20, 25, 30, 35, 40, 45, 50, 55, 60,65, 70, 75, 80, 85, 90, 95, 100, 110, 120, ... 250; length (mm): 1,000, 2,000b) Diameter (mm): 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, ... sticks. PTFE has the lowest coefficient of friction of all known solid materials. It has the best electrical properties ...