Technical Data Sheet
PTFE Teflon Rods
Standard Items
Polytetra Processors
Rakhial, Ahmedabad, Gujarat, India
www.automatasia.com
Available from 5 mm to 300 mm dia in pure Teflon, glass filled, carbon and bronze filled grades, with a fully machinable surface for bushes, seats and spares.
Specification
| Sizes | Extruded: 5–100 mm OD; moulded: 100–300 mm OD; 300, 500 and 1000 mm standard lengths; custom cut lengths |
|---|---|
| Tolerances | Machined to customer drawing and agreed inspection criteria |
| Grades | Virgin PTFE, 15% Glass-filled PTFE, 25% Glass-filled PTFE, 25% Carbon-filled PTFE, 40% Bronze-filled PTFE, MoS₂-filled PTFE |
| Standards | ASTM D4894, ASTM D1710, ASTM D4745 |
| Typical uses | Machined bushes & spacers, Valve seats, Insulators, Import substitute spares |
| Industries | Chemical, Pharmaceutical, Engineering, Electrical |
Typical properties — virgin PTFE
| Property | Typical value | Test method |
|---|---|---|
| Specific gravity | 2.14 – 2.20 | ASTM D792 |
| Tensile strength | 20 – 35 MPa | ASTM D638 / D4894 |
| Elongation at break | 200 – 400 % | ASTM D638 / D4894 |
| Hardness | Shore D 50 – 65 | ASTM D2240 |
| Coefficient of friction (dynamic) | 0.04 – 0.10 | ASTM D1894 |
| Continuous service temperature | −200 °C to +260 °C | — |
| Melting point | ≈ 327 °C | ASTM D4894 |
| Dielectric strength | ≈ 32 kV/mm (short time, thin section) | ASTM D149 |
| Water absorption | < 0.01 % | ASTM D570 |
Typical values for guidance only, not guaranteed minimums. Filled grades, linings and finished parts differ; confirm limits for your application. Issued 2026.