Use Welch-Ilmvac vacuum pump oils to reduce oil change cycles and maximize
performance. The warranty is only effective when using Welch-Ilmvac qualified
vacuum pump oils.
Please note that for demanding applications not all types of Welch-Ilmvac
vacuum pump oil can be used.
Please contact your local Welch-Ilmvac representative for further details.
Welch-Ilmvac vacuum pump oil selection guide:
Kind of Oil Rotary Vane Pumps Oil Diffusion Pumps Roots pumps
Labovac 10 x x
Labovac 11 x
Labovac 12S x
Labovac 13 x
Labovac 14 x
XT 704 x
XT 705 x
Santovac 5 x
Labovac rotary vane pump oils guarantee best performance by continuous and
careful quality control. To cover the whole range of vacuum applications we
offer five types of oil with different specifications.
Labovac 10 - Mineral oil
Standard oil for One and Two-stage Welch-Ilmvac Rotary Vane pumps and
chemvacis. To pump air, inert gases and noble gases.
Remarks: Oil Service cycles can be extended by using a oil-filter.
Labovac 11 - Synthetic oil
Used for high operating temperatures > 100°C, specially in One-stage rough
vacuum rotary vane pumps.
Remarks: Do not pump any inorganic acids. Ultimate pressure up to 0.5 mbar
Labovac 12S - Paraffin based mineral oil
For pumping air, chemically inert permanent gases - water vapour, solvent
Remarks: Oil Service cycles can be extended by using a chemical oil-filter.
Pump should operated with a cold trap.
Labovac 13 - PFPE oil
For pumping strong oxidants like oxygen, ozone and reactive substances
Remarks: Mixing with other types of oil must be absolutely avoided. We
recommend to order the rotary vane pump directly with these vacuum oil to
ensure best performance.
Labovac 14 - Polyalphaolefin (PAO) oil
For pumping of chemically inert permanent gases - water vapor and solvent
vapors. Improved cold starting at low temperatures.
Remarks: A oil-filter is strongly recommend. Ultimate pressure up to 10-2mbar
Type vapeur pressure Viscosity Flash point Density
at 20 °C (mbar) at 40 °C (cST) (°C) at 15 °C (g/ml)
Labovac 10 10^-5 118.0 270 0.854
Labovac 11 10^-5 110.0 260 0.957
Labovac 12S 10^-8 94.0 260 0.896
Labovac 13 10^-6 120.0 not applicable 1.88
Labovac 14 < 10^-6 47.9 257 0.82
Other voltages on request. Please contact us.