PTFE Sheet Rod & Tube - Polytetrafluoroethylene
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Also available:
PTFE - Blue Food Compliant
PTFE Glass Filled
PTFE Carbon Filled
PTFE is a semi-crystalline high performance thermoplastic with excellent chemical resistance, very good non-stick characteristics as well as good machinability. PTFE has poor creep and wear resistance. PTFE is also extensively used as a gasket material in its own right or also to encapsulate another jointing material.
Key Features:
Extremely good chemical resistance against virtually all media
Hot water resistant
Very good sliding properties
Anti-adhesive
Very good UV resistance
Very good electrical insulation
Soft
Difficult to bond
Gamma radiation sensitive
Self-extinguishing V-0
Non-melting
Temperature Range:
-250ºC to +250ºC, +250ºC short term
Applications:
Gaskets and seals, slide bearings, insulators, washers and rollers.
Availability:
| Colour: |
White. |
| Sheet size (mm): |
600 x 600, 1200 x 1200, 1500 x 1500 |
| Thickness (mm): |
0.5 to 100. |
| Rod dia (mm): |
4 to 300. |
| Tube od (mm): |
15 to 275. |
We also supply PTFE in roll form.
Technical Information:
Information to be used as a guide only. It corresponds with our current knowledge and indicates possible applications. We cannot guarantee suitability for a specific application. Unless otherwise stated these values represent averages taken from injection moulded samples.
| Properties |
Unit |
Test Method DIN ASTM |
Result |
| Mechanical |
- |
- |
- |
| Density |
g/cm³ |
53479 |
2.18 |
| Tensile strength at yield |
MPa |
53455 |
25 |
| Tensile strength at break |
MPa |
53455 |
- |
| Elongation at Break |
% |
53455 |
500 |
| Modulus of elasticity in tension |
MPa |
53457 |
700 |
| Modulus of elasticity in flexure |
MPa |
53457 |
- |
| Ball indentation hardness |
MPa |
53456 |
30 |
| Impact strength (Charpy) |
KJ/m² |
53453 |
o.Br. |
| Creep rupture strength after 1000 hours with static load |
MPa |
- |
5 |
| Time yield limit for 1% elongation after 1000 hours |
MPa |
- |
1.5 |
| Coefficient of friction against hardened and ground steel p+0,05 N/mm2, v=0,6 m/s |
- |
- |
0.08 - 0.1 |
| Wear conditions as above |
µm/km |
- |
21 |
| Thermal |
- |
- |
- |
| Crystalline melting point |
ºC |
53736 |
327 |
| Glass transition temperature |
ºC |
53736 |
-20 |
| Heat distortion temperature method A |
ºC |
ISO 75 |
5.5 |
| Heat distortion temperature method B |
ºC |
ISO 75 |
121 |
| Max. service temperature short term |
ºC |
- |
260 |
| Max. service temperature long term |
ºC |
- |
260 |
| Coefficient of thermal conductivity |
W/(m K) |
- |
0.25 |
| Specific heat |
J/(g K) |
- |
1 |
| Coefficient of thermal expansion |
10-5/K |
- |
12 |
| Electrical |
- |
- |
- |
| Dielectric constant at 10 (5) Hz |
- |
53483 |
2.1 |
| Dielectric loss factor at 10(5) Hz |
- |
53483 |
0.0002 |
| Specific Volume Resistance |
Ωcm |
53482 |
10 (18) |
| Surface Resistance |
O |
53482 |
|
| Dielectric strength 1mm |
kV/mm |
53481 |
48 |
| Tracking resistance |
- |
53480 |
KA 3c/KB > 600 |
| Miscellaneous |
- |
- |
- |
| Moisture Absorption: Equilibrium in standard atmosphere (23ºC / 50% relative humidity) |
% |
53714 |
0 |
| Water absorption at saturation at 23ºC |
% |
53495 |
- |
| Resistance to hot water, washing soda |
- |
- |
resistant |
| Flamability |
- |
UL 94 |
VO |
| Resistance to weathering |
- |
- |
resistant |
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