Polytetrafluoroethylene (PTFE), commonly known as Teflon, or under brand names Tetron/Ticomp, falls under the advanced engineering section of the engineering plastics pyramid. PTFE is a synthetic fluoropolymer with high-performance properties such as exceptional chemical and heat resistance, and a very low coefficient of friction. More properties and applications will be explained below.
Key Properties of PTFE
- Non-stick: Lowest coefficient of friction
- Chemical Resistance: Inert to most chemicals and solvent
- Temperature: -200 degrees Celsius to +260 degrees Celsius (broadest)
- Electric Insulation: Best Dielectric Strength 50-60kV/mm
- Naturally UV Stable
- Low Flammability: UL94 V-0
- Food Compliant
Dotmar PTFE Capabilities
Dotmar can supply stock shapes (rod & sheet), custom manufactured parts, and custom sized cylinders.
| Grade | Common Fillers | Description |
|---|---|---|
| Tetron | Tetron S | Virgin, no fillers |
| Tetron G | 25% Glass filled | |
| Tetron GR | Glass/graphite combination filler | |
| Tetron C | 25% Carbon filled | |
| Tetron B | 60% Bronze filled | |
| Ticomp | Ticomp S | Bearing grade/ suitable for food contact |
| Ticomp BG | Bearing grade – better than Ticomp S | |
| Ticomp HVM | Designed for high-speed wear parts | |
| Ticomp MD | Metal detectable blue | |
| Tetco | Tetco V | Melt processable (weldable) – various available. |
Common Applications
- Rotating or pivoting bearings or bushes
- Wear Pads
- Wear strips and chain guides
- Scrapers
- Rollers
- Pulleys & Sheaves
- Gears
- Seals
- Fabricated Parts – tanks or guards
- Spacers or Structural parts
- Electrical insulator
- Flow promotion liner
- Other