FL-705 High Phenyl Content Silicone Oil Vacuum Diffusion Pump Oil

Structural Formula:


Viscosity (25°C )mm2/s170~175 cst
Viscosity (40°C )mm2/s61-64 cst
Refractive index 25°C1.576-1.578
Specific Gravity1.090 ~ 1.100
Flash Point °C≥ 243
Pour Point °C≤ -14~-18
Ultimate Vacuum, torr (untrapped)Max. 5 X 10-9
saturated vapor pressure, PaMax. 6.65 X 10-10


With very low saturated vapor pressure and excellent heat stability as well as outstanding oxidation-resistant performance, the product is suitable for high vacuum industry, such as high vacuum smelting industry, high vacuum coating in electronic industry, atomic energy accelerators and electron microscopes and monitors, etc.

Transport as non-hazardous chemicals, keeping away from rain and sunlight.
Shelf life: 3 years. It still can be used after being tested and qualified when exceeding the shelf life