- Data Sheet: F1-17
Diflon D (72% Virgin PTFE + 28% glass fiber)
PTFE Glass Compound preferred for parts and components requiring very good mechanical properties.
This material offers an excellent combination of properties Typical of the PTFE fluoropolymer resins:
• Service Temperature: offers excellent resistance to continuous service temperatures – working conditions from -100° C (-148°F) up to 250°C (482°F) and, for limited periods, even to higher temperatures; product’s
low temperature resistance allows satisfactory performance down to -200°C (-328°F).
• Chemical resistance: offers high inertness towards nearly all known chemicals. Only attacked elemental alkali metals, chlorine trifluoride and elemental fluorine at high temperature and pressures might affect properties.
Glass fibres is chemically inert with the exception of its reactivity with hydrofluoric acid and strong bases.
• Solvents resistance: offers insoluble properties in all solvents up to temperatures as high as 300°C (572° F). Certain highly fluorinated oils only swell and dissolve PTFE at temperatures close to the crystalline melting
point.
Properties
• Improved thermal dimensional stability • Excellent chemical stability
• Improved creep resistance
• Excellent electrical insulating properties • Improved compression strength
• Reduced friction & wear; Low friction behaviour • Exceptional temperature resistance
• Improved surface hardness
Main applications
PTFE Glass Compound offers excellent properties in the chemical processing, in automotive industries, in sealing application and in mechanical applications in general for bushing, sliding pads, and for slide ways for machine tools.
High wear, abrasion resistance and good wear compression properties are suitable for the majority of dry bearing applications against hard countersurfaces.
PTFE Glass Compound is commonly used filler for dynamic seal applications where both rotating and alternating movements are involved, pneumatic, hydraulic and mechanical parts, valve seats, gaskets, pneumatic, compressors, appliances, insulators hydraulic and mechanical parts.
Statement on suitability for contact with foodstuff
FDA Approved US Regulation
• Code of Federal regulation 21 CFR Ch.1; section 177.1550 Perfluorocarbon Resins of the Food and Drug
Administration/US.
EU Regulation
| Property | Method | Units | Specification | |
|---|---|---|---|---|
| Physical | Color | - | - | Blue |
| Specific gravity | ASTM D792 | g/cm3 | 2,200 – 2,270 | |
| Water absorption | ASTM D570 | % | 0,03 | |
| Flammability | UL 94 | V-0 | ||
| Mechanical | Tensile strength | ASTM D4745 | MPa | ≥ 13 |
| Elongation | ASTM D4745 | % | ≥ 180 | |
| Hardness | ASTM D2240 | Shore D | ≥ 60 | |
| Ball Hardness | ASTM D785 | MPa | ≥ 25 | |
| Deformation under load (140 Kg/cm2 for 24 hrs. At 23° C) |
ASTM D621 | % | 9-11 | |
| Permanent deformation (after 24 hrs. Relaxation at 23° C) |
ASTM D621 | % | 5-7 | |
| Coefficient of static friction | ASTM D1894 | 0,17-0,20 | ||
| Coefficient of dynamic friction | ASTM D1894 | 0,15-0,17 | ||
| Wear coefficient | - | cm3 min 10-8 Kg m h |
15-25 | |
| Thermal | Thermal conductivity | ASTM C177 | W/ m*K | 0,41 |
| Coefficient of linear thermal expansion From 25 to 100 °C |
ASTM D696 | 10-5/°C | 7,5-11 | |
| Electrical | Volume resistivity | ASTM D257 | Ohm*cm | 1015 |
| Surface resistivity | ASTM D257 | Ohm | 1014 | |
