PTFE (polytetrefluoroethylene) is a low friction fluoropolymer with outstanding chemical and weathering resistance. It is soft, formable, exhibits excellent electrical insulating properties, and performs well at elevated temperatures up to 500°F. PTFE is widely used for seals, gaskets, valve and fitting components, pump parts, semiconductor and scientific equipment, and chemical resistant tubing.
PTFE is available in a variety of formulations including unfilled, glass-filled, bearing, and FDA compliant grades. Please ask your Curbell Plastics representative for more specific information.
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For a glossary of terms, see our Plastic Properties Descriptions.
TYPICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
1,500 - 3,000 |
| Flexural Modulus of Elasticity |
psi |
D790 |
72,000 |
| Izod Impact (notched) |
ft-lbs/in of notch |
D256 |
3.5 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
250 - |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
<0.01 |
PHYSICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Specific Gravity |
- |
D792 |
2.15 |
Water Absorption
(Immersion 24 hours) |
% |
D570 |
<0.01 |
MECHANICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Tensile Strength |
psi |
D638 |
1,500 - 3,000 |
| Tensile Modulus of Elasticity |
psi |
D638 |
- |
| Tensile Elongation |
% |
D638 |
100 - 200 |
| Flexural Strength |
psi |
D790 |
- |
| Flexural Modulus of Elasticity |
psi |
D790 |
72,000 |
| Compressive Strength |
psi |
D695 |
- |
| Hardness |
scale as noted |
D785, D2240 |
Shore D 55 |
| Izod Impact |
ft-lbs/in |
D256 |
3.5 |
THERMAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Coefficient of Linear Thermal Expansion |
in/in/°F x 10-5 |
D696 |
8.9 |
| Heat Deflection Temperature (66psi / 264psi) |
°F |
D648 |
250 - |
| Max Continuous Service Temperature In Air |
°F |
- |
500 |
ELECTRICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Dielectric Strength |
V/mil |
D149 |
400 - 500 |
OPTICAL PROPERTIES
| |
UNITS |
ASTM TEST |
|
| Light Transmittance |
% |
D1003 |
- |
| Haze |
% |
D1003 |
- |
OTHER
| |
UNITS |
ASTM TEST |
|
| Coefficient of Friction |
- |
Dynamic |
0.10 |
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.
Still Not Sure if You Need PTFE? Research PTFE or Ask a Plastics Expert.