Fomblin® Z25 PFPE
Fomblin® Z25 is an ISO VG 150 PFPE perfluoropolyether lubricating oil. It features excellent low-temperature fluidity, extremely low evaporation loss, a high viscosity index, and good extreme-pressure and anti-wear performance. The product is suitable for long-term lubrication of precision equipment and moving components operating under vacuum, high-cleanliness, high- and low-temperature, or chemically aggressive conditions.
Product Details
Product Features
Extremely low evaporation loss
Stable viscosity-temperature performance
Good low-temperature fluidity
Excellent chemical stability
Non-flammable with good electrical insulating properties
Applicable Industries / Equipment
Aerospace Industry: Critical moving components in aircraft hydraulic systems, landing gear, fuel management systems, and engine nacelle thrust reverser systems.
Precision Machinery: Precision bearings, gears, transmission mechanisms, and sliding components requiring long-term lubrication.
Vacuum and High-Cleanliness Equipment: Vacuum equipment, semiconductor equipment, and moving mechanisms requiring low contamination and minimal volatilization.
Chemical and Special-Media Equipment: Pumps, valves, seals, and mechanical components exposed to acids, alkalis, fuels, solvents, chlorine, and other corrosive media.
Low-Temperature and Thermal-Cycling Equipment: Bearings, actuators, and precision transmission components requiring low-temperature start-up and repeated high- and low-temperature operation.
Electrical and Electronic Equipment: Electrical and precision instrument components requiring non-flammability, electrical insulation, and chemical stability.
| Item | Fomblin® Z25 Typical Value |
|---|---|
| Physical Form | Liquid |
| Chemical Type | PFPE Perfluoropolyether |
| Approximate IS0 Viscosity Grade | ISO VG 150 |
| Average Molecular Weight | 17,100 amu |
| Kinematic Viscosity（20℃） | 223 mm²/s（ASTM D445） |
| Kinematic Viscosity（40℃） | 133 mm²/s（ASTM445） |
| Kinematic Viscosity（100℃） | 42 mm²/s（ASTM D445） |
| Viscosity Index | 350（ASTM D2270） |
| Pour Point | -75℃（ASTM97） |
| Evaporation Loss（204℃×22h） | 0.40%（ASTM D2595） |
| Surface Tension（20℃） | 25 dyn/cm（ASTM D1331） |
| Density（20℃） | 1.85 g/cm³（ASTM D4052） |
| Four-Ball Wear Scar Diameter | 0.90 mm（ASTM D4172） |
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