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PRODUCT
Products
Fomblin® Y-LOX 120 High-Performance PFPE Lubricant | Low Vapor Pressure, Heat-Resistant Oil for Vacuum & Compressor Systems
Product Number：Fomblin® LC 200, Y-LOX 120
[Operating Temperature]
The official Solvay datasheet recommends keeping fluid temperature below 280 °C for long fluid life;
exceeding 290 °C may lead to decomposition and release of toxic gases
The official Solvay datasheet recommends keeping fluid temperature below 280 °C for long fluid life;
exceeding 290 °C may lead to decomposition and release of toxic gases
[Operating Temperature]
The official Solvay datasheet recommends keeping fluid temperature below 280 °C for long fluid life;
exceeding 290 °C may lead to decomposition and release of toxic gases
Fomblin® Y-LOX 120 High-Performance PFPE Lubricant
Y-LOX 120 Low Vapor Pressure, Heat-Resistant Oil for Vacuum & Compressor SystemsProduct Description
Fomblin Y-LOX 120, developed by Syensqo (formerly Solvay), is a premium perfluoropolyether (PFPE) lubricant engineered for liquid compressors and vacuum applications. It features ultra-low vapor pressure (≈2×10⁻⁴ torr at 20 °C; ≈5×10⁻² torr at 100 °C), a high viscosity index (~120), and exceptional thermal stability across a wide temperature range (down to –46 °C). Its inertness to acids, alkalis, chlorine, biofuels, alcohols, and mineral oils, coupled with non-flammability, transparency, oxidative and radiation resistance, and dielectric properties, make it an ideal base oil for harsh and safety-critical environments.
Fomblin® Y-LOX 120 perfluoropolyether fluids have the following unique features:
- Outstanding chemical resistance – Stable in acids, bases, chlorine, biofuels, alcohols, and mineral/synthetic oils
- Thermal stability – Wide operating range (–46 °C to above 100 °C), ideal for extreme conditions
- Low vapor pressure – Minimizes backstreaming and contamination in vacuum systems
- High viscosity index – Ensures consistent lubrication despite temperature variations
- Non‑flammable and dielectric – Safe for use in hazardous or electrically-sensitive environments
- Transparent and radiation-resistant – Allows visual inspection and long-term durability
| Typical Properties | Unit | Test Method | Y-LOX 120 PFPE Lubricants |
|---|---|---|---|
| Kinematic Viscosity 20°C 40°C 100°C |
cSt |
ASTM D445 |
120 42 6.8 |
| Viscosity index | - | ASTM D2270 | 120 |
| Pour point | °C | ASTM D97 | -46 |
| Weight Loss on Heating @120°C | wt(%) |
ASTM 2595 |
< 10% |
| Specific Gravity | g/cm3 | - | 1.89 |
| Vapor pressure at 20°C at 100°C |
torr |
- |
2-10-4 5-10-2 |
| Surface tension at 25°C | dyne/cm | 21 |