PTFE (Teflon) - Virgin
| Chemical Name: | PolyTetraFluoroEthylene |
| Abbreviation: | PTFE |
| Common/ Trade Names: | Teflon®, Rulon®, Hostaflon |
| Properties: | |
| Colour | White in Virgin form, |
| Form | Sheet, Rod, Tube and Block |
| Grades: | Grades of PTFE are varied by the addition of fillers
Virgin (no filler), Glass fibre filled 15% and 25%, Carbon Filled, Bronze Filled, |
| Applications: | Back up washers, Bearing pads
Cup seals, Scraper Blades V-packing, Plain Bearing Bushing Lantern rings, O-Rings, |
| Machining: | Very good |
| Types: | |
| Advantages: | Does not absorb moisture
Low coefficient of friction Tolerant of high temperature useful up to 200°C Very good in contact with soft materials Very good frictional characteristics between ‘Static’ and ‘Dynamic’ friction that is in “slip stick” application Electrical insulation, Food Grade compatibility (Virgin) |
| Disadvantages: | Low tensile strength and Compressive strength
Higher wear rate mainly due to comparatively lower mechanical properties, High linear expansion Higher Cost |
| Chemical Resistance: | PTFE is considered to be a very Chemical resistant material. |