Technical Data Sheet
Aramid PTFE Packing
PTFE Braided Packing
Polytetra Processors
Rakhial, Ahmedabad, Gujarat, India
www.automatasia.com
High quality braid of PTFE yarn with incorporated graphite and reinforced aramid corner yarns for abrasive and high pressure duty.
Specification
| Sizes | Square sections and coil lengths to application |
|---|---|
| Tolerances | Braid section and density to agreed specification |
| Grades | Virgin PTFE, Graphite-filled PTFE, Aramid-reinforced PTFE, Lubricated PTFE |
| Standards | ASTM D4894, ASTM D4745 |
| Typical uses | Slurry pumps, Abrasive media sealing |
| Industries | Mining, Paper, Chemical |
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.