描述
Fomblin YR High Viscosity PFPE Lubricant ISO VG 320 Low Evaporation
Material: PFPE (Perfluoropolyether)
Viscosity (40°C): 345 cSt
Viscosity Index: 135
ISO Grade: 320
Packing: 5 kg / drum
Fomblin YR 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, very good extreme pressure and wear characteristics, and low evaporative loss. It has a kinematic viscosity of 345 cSt at 40°C and 33.0 cSt at 100°C, classified as ISO VG 320 with a viscosity index of 135.
Fomblin YR features exceptionally low evaporative loss: 0.50% at 149°C/22h and 1.2% at 204°C/22h, providing extended service life and reduced maintenance intervals. Its high density (1.91 g/cm³ at 20°C), high molecular weight (6400 amu), and excellent chemical resistance ensure reliable performance in demanding high-load applications where conventional lubricants would fail.
Genuine Syensqo Imported Stock and Technical Support
We supply stable spot inventory of genuine Syensqo Fomblin YR PFPE lubricant. Official TDS, SDS, and batch COA documents are available for heavy-duty industrial applications requiring high-viscosity PFPE lubrication with extremely low evaporation loss.
Request Fomblin YR Quotation, TDS, SDS, and Sample
Complete SDS, COA, and customs clearance documents available
Core Advantages of Fomblin YR PFPE Lubricant
- High viscosity: 345 cSt at 40°C — ISO VG 320 for high-load, slow-speed applications
- Extremely low evaporation loss — 0.50% at 149°C/22h, 1.2% at 204°C/22h for extended service life
- Excellent high-temperature stability — reliable performance at elevated operating temperatures
- Very good extreme pressure and wear characteristics — Four Ball Wear Test 0.9 mm
- High molecular weight: 6400 amu — enhanced film strength and load-carrying capacity
- Excellent chemical resistance — inert to aggressive chemicals, solvents, acids, and bases
- High density: 1.91 g/cm³ at 20°C — superior lubricant film integrity
Main Applications
- Heavy-duty bearings and gearboxes requiring ISO VG 320 viscosity
- High-load, slow-speed industrial equipment
- Vacuum pump oils for demanding chemical environments
- Compressor lubrication at elevated temperatures
- Chemical process industry equipment requiring inert lubrication
- Applications requiring maximum oil film thickness and extended service intervals
Full Technical Parameters
| Property | Typical Value | Test Method |
| Base Material | Perfluoropolyether (PFPE) | — |
| Visual Appearance | Clear colorless to light yellow liquid | Visual |
| Density (20°C) | 1.91 g/cm³ | ASTM D4052 |
| Average Molecular Weight | 6400 amu | GPC |
| Kinematic Viscosity (40°C) | 345 cSt | ASTM D445 |
| Kinematic Viscosity (100°C) | 33.0 cSt | ASTM D445 |
| Viscosity Index | 135 | ASTM D2270 |
| Pour Point | -25 °C | ASTM D97 |
| Surface Tension (20°C) | 24 dyne/cm | — |
| Evaporation Loss (149°C/22h) | 0.50 % | ASTM D2595 |
| Evaporation Loss (204°C/22h) | 1.2 % | ASTM D2595 |
| Four Ball Wear Test | 0.9 mm | ASTM D4172 |
| Approximate ISO Grade | 320 | — |
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 before filling. |
| 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 YR 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 YR?
Fomblin YR has a kinematic viscosity of 345 cSt at 40°C and 33.0 cSt at 100°C. It is classified as ISO VG 320 with a viscosity index of 135.
How does Fomblin YR differ from Fomblin Y25?
Fomblin YR has a significantly higher viscosity (345 cSt vs 80.0 cSt at 40°C) and is classified as ISO VG 320 versus Y25’s ISO VG 100. YR also features lower evaporation loss (0.50% vs 2.0% at 149°C/22h) and higher molecular weight (6400 amu vs 3700 amu), making it suitable for heavier-duty, higher-load applications with extended service intervals.
What applications is Fomblin YR suitable for?
Fomblin YR is ideal for heavy-duty bearings, gearboxes, high-load slow-speed industrial equipment, and demanding chemical process applications requiring ISO VG 320 viscosity grade PFPE lubrication with extremely low evaporation loss.
Is Fomblin YR chemically resistant?
Yes. Fomblin YR offers excellent chemical resistance and is inert to most aggressive chemicals, solvents, acids, and bases, making it suitable for demanding environments.
What is the evaporation loss of Fomblin YR?
Fomblin YR exhibits very low evaporation loss: 0.50% at 149°C/22h and 1.2% at 204°C/22h, providing long service life and extended maintenance intervals.
What technical documents are available for Fomblin YR?
We can provide TDS, SDS, and batch COA documents to support product evaluation, import clearance, and quality assurance requirements.
Related Fomblin Y Series Lubricants
Compare Fomblin Y series lubricants for different viscosity and application requirements.
| Product Grade | Viscosity (40°C) | ISO Grade | Evaporation Loss (149°C) | Core Application |
| Fomblin Y25 | 80.0 cSt | 100 | 2.0% | High viscosity + EP |
| Fomblin YR | 345 cSt | 320 | 0.50% | Ultra high viscosity, extremely low evaporation |
Get Fomblin YR Bulk Pricing and Technical Support
We supply genuine Syensqo Fomblin YR high viscosity PFPE lubricant for heavy-duty industrial applications. Contact us for bulk pricing, sample availability, technical documents, and application support.
Request Fomblin YR 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.
