Glass Filled PTFE
The amount of glass filler can be 5% to 25% by weight. Depending on the composition, the glass-filled PTFE materials have:
- More durable and stronger
- To have a superior compressive strength
- Less flexible
- More abrasive compared to virgin PTFE.
- Glass-filled PTFE chemical compatibility is relatively high, hence does not react with most chemicals.
- Glass filler does not change the working temperature range (-200oC to +260oC).
Depending on your unique requirements, you can get a glass-filled PTFE rod, glass-filled PTFE sheets, or any configuration.
Comparing Glass Filled PTFE Vs. Carbon Fiber Filled PTFE
Although the two PTFE fillers improve performance, there is a slight variation in their characteristics:
- Carbon Filled PTFEhas high thermal conductivity than PTFE filled with glass
- Glass-filled PTFE has a higher coefficient of friction than carbon-filled PTFE
Applications of Glass-Filled PTFE
Hydraulic piston rings, seats, shaft bearing – this is due to the superior wear resistance properties
Glass-filled PTFE gasket – since it is resistant to permanent deformation and resists wear when subjected to high loading.
Glass-filled PTFE sealing – perfect for dynamic loading or reciprocating movements.
Other applications include pump housing, slide runners, roller coverings, etc.
It is worth noting that under certain circumstances, you may have 15% Glass filler and 5% MoS2 or graphite. In such circumstances, the filled PPTFE will have improved co-efficient or friction and thermal conductivity.
- Performance Table
- Specification Sheet
| 数据/DATA SHEET | |||||
| PROPERTY: | (MEASURING METHOD:ASTM D4894) | ||||
| 15%glass fiber+85% ptfe | 20%glass fiber+80% ptfe | 25%glass fiber+75% ptfe | 30%glass fiber+70% ptfe | unit | |
| SPECIFIC GRAVITY: | 2.20±0.01 | 2.21±0.01 | 2.21±0.01 | 2.21±0.01 | g/cm3 |
| TENSILE STRENGTH: | 20±3 | 16±3 | 15±3 | 12±2 | Mpa |
| ELONGATION: | 320±50 | 300±50 | 250±50 | 230±50 | % |
| BULK DENSITY: | —— | —— | —— | —— | g/l |
| HARDNESS: | 54-56 | 54-56 | 54-56 | 54-56 | shore D |
| FLOW-ABILITY: | —— | —— | —— | —— | sec/50g |
| AVE.PARTICLE SIZE: | —— | —— | —— | —— | micron |
| SHRINKAGE: | 2.0-3.0 | 2.0-3.0 | 1.5-2.5 | 1.5-2.5 | % |
| PRESSURE | 400 | 400 | 400 | 400 | kg/cm2 |
| MAX SINTERING TEM. | 380 | 380 | 380 | 380 | ℃ |
| Molded sheet | 1200*1200mm | Thickness:5–100mm | |
| Skived sheet | Width 1000mm,1200mm,1500mm, | Thickness: 1mm,1.5mm,2.0mm,2.5mm,3mm,5mm | |
| Bronze filled Tube | OD30MM—2000MM | ID10MM–1650MM | Length:50–300mm |
| Bronze filled rod | OD30MM–3000MM | Length :50–300mm |
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