Glass Filled PTFE Rod
The rod diameter sizes range from 2 mm to 600 mm. It can conform to FDA standards. The glass filler can be added to your special needs.
Welcome to Learning About Glass-Filled PTFE Rod
The glass-filled PTFE rod is a high-performance plastic composite material made from PTFE and contains 4% to 25% glass fibres. Glass fibre is the most common filler for PTFE, increasing the wear and creep resistance of the material. This material has improved dimensional stability with a lower coefficient of linear thermal expansion and higher deformation under load
The most commonly used percentages of glass fibres in PTFE are 4%, 8%, 10%, 15%, 20% and 25%. Other fillers are often bronze, carbon, Ekonol, polyimide and PEEK.
Advantages
The FDA-approved grade of glass-filled PTFE rod is available. It has reduced deformation under load, lower thermal expansion, excellent compressive strength and excellent wear properties. It has exceptional temperature resistance, which means it performs impressively in oxidising environments, but it also has some weaknesses.
Weakness
Despite its many advantages and benefits, it also has weaknesses.
- Abrasive filler unsuitable for some applications
- Resistance to gas permeation is reduced
When it’s for your application usage. Please contact us for suggestions.
Application
As the glass-filled PTFE rod provides high stiffness, wear resistance, and dimensional stability, it is suitable for medical devices like mandrels. Other applications are piston rings, gaskets, valve seats, shaft seals, seals, electrical components and chemical components.
Industries’ usages are the food industry, mechanical engineering industry, oil and gas, electronics and wind energy industries.
Physical Properties of Glass-Filled PTFE
| Test Items | Test Methods | Unit | 10% Glass | 15% Glass | 25% Glass |
|---|---|---|---|---|---|
| Density | ASTM D792 | g/cm3 | 2.2 | 2.22 | 2.24 |
| Hardness Shore D | ASTM D2240 | Sh.D | 59 | 60 | 62 |
| Tensile strength | ASTM D638 | mpa | 23 | 22 | 21 |
| Elongation at break 23°C | ASTM D638 | % | 250 | 230 | 210 |
| Coefficient of static friction | ASTM D1894 | - | 0.15 | 0.16 | 0.18 |
| Thermal conductivity 23°C | DIN 52612 | W/K.m | 0.28 | 0.39 | 0.46 |
| Max water absorption | ASTM D570 | % | 0.013 | 0.015 | 0.02 |
