Fomblin Y LVAC 25/6 vs Fomblin RT 15
PFPE vacuum pump fluid vs PFPE grease.
// Key differences
- Form: Y LVAC 25/6 is an oil for rotary vane pumps; RT 15 is a grease.
- Both are chemically inert – suitable for aggressive or oxygen-rich process gases.
Choose Fomblin Y LVAC 25/6 for:
Filling vacuum pumps in semiconductor and chemical processes.
Choose Fomblin RT 15 for:
Lubricating valves, seals and bearings in vacuum/oxygen.
Full specification comparison
| Parameter | Fomblin Y LVAC 25/6 | Fomblin RT 15 |
|---|---|---|
| Manufacturer | Syensqo (Solvay) FOMBLIN | Syensqo (Solvay) FOMBLIN |
| Category | Aerospace & Vacuum Lubricants | Aerospace & Vacuum Lubricants |
| Temperature range | -20°C … +250°C | -20°C … +200°C |
| Standards / approvals | REACH | BAM (oxygen) |
| Chemistry | Perfluoropolyether (PFPE) oil | PFPE oil + PTFE thickener |
| Operating temperature | -20°C … +250°C | -20°C … +200°C |
| Vapour pressure (20°C) | ≈ 6×10⁻⁸ torr (25°C) | — |
| Kinematic viscosity (20°C) | ≈ 276 cSt | — |
| Flammability | Non-flammable | Non-flammable |
| Specification | REACH | BAM (oxygen) |
| NLGI grade | — | 2 |
| LOX compatibility | — | Yes |
| TDS & quote | TDS & quote |
Data compiled from manufacturer data sheets — confirm critical values with the official TDS.
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