Low friction engineering plastic with outstanding chemical, high temp, and weathering resistance
PTFE (polytetrafluoroethylene) is a soft, low friction fluoropolymer with outstanding chemical resistance and weathering resistance. PTFE is stable at temperatures up to 500oF and is often used in high-temperature environments. PTFE also has excellent electrical insulating properties.
PTFE is available in a variety of formulations including unfilled, glass-filled, bearing, and FDA compliant grades.
PTFE IS WIDELY USED FOR:
- Seals and gaskets
- Valve and fitting components
- Pump parts
- Manifolds
- Semiconductor equipment
- Scientific equipment
- Chemical resistant tubing
- Bearings and bushings (bearing grades)
PERFORMANCE CHARACTERISTICS:
- Outstanding chemical resistance
- Extremely low friction
- Soft and formable
- Good weathering resistance
- Performs well at elevated temperatures
STANDARD SIZES
| SHEET | Dimensions: 48 in x 48 in Thickness: 0.031 in – 4 in |
| ROD | Outside Diameter: 0.125 in – 8 in |
| COLOR | White (Natural) |
| GRADES | Virgin, Reprocessed, Glass-Filled |
Length, width, thickness, and diameter tolerances vary by size, by manufacturer, brand, and grade. Custom sizes available upon request. PTFE is also available in tape, fabric, and tubing.
PTFE Properties and Material Options
Virgin (Unfilled) Grade PTFE– Unfilled PTFE, made from virgin PTFE resin, is extremely soft and formable and is often used for chemical resistant seals and gaskets.
Glass-Filled PTFE– Glass-filled PTFE has enhanced strength and stiffness.
Bearing Grades of PTFE– Bearing grades of PTFE have extremely low friction and high service temperatures. They are frequently specified for high-performance bearings and bushings, particularly in applications that require resistance to corrosive chemicals.
Reprocessed PTFE– Reprocessed PTFE is made from recycled material.
Tech Tip– PTFE can be used at any temperature from -328°F (-200°C) to 500°F (+260°C)
| UNITS | ASTM TEST | PTFE | |
|---|---|---|---|
| Tensile strength | psi | D638 | 1,500 – 3,000 |
| Flexural modulus | psi | D790 | 72,000 |
| Izod impact (notched) | ft-lbs/in of notch | D256 | 3.5 |
| Heat deflection temperature @ 66 psi | °F | D648 | 250 |
| Maximum continuous service temperature in air | °F | 500 | |
| Water absorption (immersion 24 hours) | % | D570 | <0.01 |
| Coefficient of linear thermal expansion | in/in/°Fx10-5 | D696 | 8.9 |
| 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.
