描述
Fomblin Y25 High Viscosity PFPE Lubricant Extreme Pressure Applications
Material: PFPE (Perfluoropolyether)
Viscosity (40°C): 80.0 cSt
Viscosity (100°C): 10.0 cSt
ISO Grade: 100
Packing: 5 KG / drum
Fomblin Y25 is a high-viscosity perfluoropolyether (PFPE) lubricant within the Fomblin Y series. Produced by Syensqo, formerly Solvay, this fluid offers excellent high-temperature stability, good low-temperature properties, and very good extreme pressure and wear characteristics. It has a kinematic viscosity of 80.0 cSt at 40°C and 10.0 cSt at 100°C, classified as ISO VG 100 with a viscosity index of 108.
Fomblin Y25 features low evaporative loss and good thermal index, making it suitable for demanding lubrication applications where conventional fluids would fail. Its high density (1.90 g/cm³ at 20°C) and chemical resistance ensure reliable performance in extreme environments. The Four Ball Wear Test at 75°C, 1200 rpm, and 40 kg load shows 0.66 mm wear, demonstrating excellent anti-wear protection.
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We supply stable spot inventory of genuine Syensqo Fomblin Y25 PFPE lubricant. Complete official TDS, SDS and batch COA documents are available for industrial and high-performance applications. Contact us for competitive bulk pricing and technical guidance on lubrication system design.
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✅ Complete SDS & customs clearance documents provided
Core Advantages of Fomblin Y25 PFPE Lubricant
- High viscosity — ISO VG 100, 80.0 cSt at 40°C, 10.0 cSt at 100°C
- Excellent EP and wear characteristics — Four Ball Wear Test 0.66 mm
- Excellent high-temperature stability — reliable performance at elevated temperatures
- Good low-temperature properties — pour point -35°C
- Low evaporative loss — 2.0% at 149°C/22h, 15% at 204°C/22h
- High viscosity index — 108, maintains viscosity across wide temperature range
- Chemical resistant and high density — 1.90 g/cm³ at 20°C
Main Applications
- High-temperature bearings and gearboxes
- Extreme pressure lubrication applications
- Vacuum pump oils for demanding environments
- Compressor lubrication at elevated temperatures
- Chemical process industry equipment
- High-load, slow-speed applications requiring EP protection
Full Technical Parameters
| Property | Typical Value | Test Method |
| Base Material | Perfluoropolyether (PFPE) | — |
| Visual Appearance | Clear Colorless to Light Yellow Liquid | Visual |
| Density (20°C) | 1.90 g/cm³ | ASTM D4052 |
| Average Molecular Weight | 3700 amu | GPC |
| Kinematic Viscosity (20°C) | 250 cSt | ASTM D445 |
| Kinematic Viscosity (40°C) | 80.0 cSt | ASTM D445 |
| Kinematic Viscosity (100°C) | 10.0 cSt | ASTM D445 |
| Viscosity Index | 108 | ASTM D2270 |
| Pour Point | -35 °C | ASTM D97 |
| Surface Tension (20°C) | 22 dyne/cm | — |
| Evaporation Loss (149°C/22h) | 2.0 % | ASTM D2595 |
| Evaporation Loss (204°C/22h) | 15 % | ASTM D2595 |
| Four Ball Wear Test | 0.66 mm | ASTM D4172 |
| Approximate ISO Grade | 100 | — |
Note: All listed figures are typical values and may vary by production batch. Complete independent qualification testing is required before mass production deployment.
Handling and Storage Recommendations
| Storage Rules | Store sealed original containers in a dry, well-ventilated area away from heat sources and direct sunlight |
| Forbidden Environments | Avoid exposure to open flames, strong oxidizing agents and reactive metal powders |
| System Design | Avoid mixing with other oil-based media; maintain system cleanliness |
| Operation Protection | Maintain adequate ventilation; wear nitrile protective gloves and anti-splash safety goggles during handling |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | Fomblin Y25 original factory technical data sheet | Request TDS |
| SDS | Safety data sheet covering transport, storage and handling guidelines | Request SDS |
| COA | Batch specific certificate of analysis for incoming goods inspection | Request COA |
Frequently Asked Questions
What is the viscosity of Fomblin Y25?
Fomblin Y25 has a kinematic viscosity of 80.0 cSt at 40°C and 10.0 cSt at 100°C. It is classified as ISO VG 100 with a viscosity index of 108.
What makes Fomblin Y25 suitable for extreme pressure applications?
Fomblin Y25 exhibits excellent extreme pressure and anti-wear characteristics, with a Four Ball Wear Test result of 0.66 mm at 75°C, 1200 rpm, and 40 kg load.
What is the operating temperature range of Fomblin Y25?
Fomblin Y25 offers excellent high-temperature stability with a pour point of -35°C, making it suitable for applications requiring wide temperature range lubrication.
Is Fomblin Y25 chemically resistant?
Yes. Fomblin Y25 is chemically resistant with high heat resistance and high density, making it suitable for demanding environments where conventional lubricants would degrade.
What is the recommended storage condition for Fomblin Y25?
Store sealed original containers in a dry, well-ventilated area away from heat sources and direct sunlight. Keep containers tightly closed when not in use to prevent contamination.
What technical documents are available for Fomblin Y25?
We supply original factory TDS, SDS and batch COA. These documents support your lubrication system qualification and quality assurance requirements.
Related Fomblin PFPE Lubricant Series
Compare Fomblin series lubricants for different viscosity and application requirements.
| Product Grade | Viscosity (40°C) | Core Application |
| Fomblin Y25 | 80.0 cSt | High Viscosity, Extreme Pressure |
| Fomblin Y45 | — | Higher Viscosity Grade |
| Fomblin YR Series | — | Radiation Resistant |
Get Fomblin Y25 Bulk Pricing & Technical Support
We stock genuine Syensqo Fomblin Y25 PFPE lubricant for extreme pressure and high-viscosity applications. Reach out for competitive pricing, lab trial samples and complete technical certification files.
Request Fomblin Y25 Lubricant Technical Details
Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
