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Specialist Materials for Industry and Science

Apiezon AP303 Turbo Pump Oil

Apiezon AP303 Turbo Pump Oil

Manufactured from high quality polyol ester base stock AP303 is a robust and proven lubricating oil for use in turbo molecular pump bearings. It offers a range of benefits, including excellent lubricity and long service life.

Temperature Range

Apiezon AP303 has a wide operating temperature range and is suitable for continuous use at typical turbo pump operating temperatures. AP303 also has low vapour pressure, meaning that it will not readily evaporate in operation.

Easily Removed

When servicing of pump bearings is carried out, Apiezon AP303 is easily removed by washing away with warm soapy water or by using any aromatic hydrocarbon solvent (toluene, xylene). For a more environmentally friendly solvent, we recommend Limonene.

AP303 is not soluble in alcohols (ethanol, IPA) or ketones (acetone, MEK) so these are not effective for cleaning.

Apiezon AP303: Turbo Pump Lubricant Properties

AP303 is a proven and robust lubricating oil. Manufactured from a high quality polyol ester base stock it:

  • provides excellent lubrication
  • is a robust liquid which offers a long service lifetime
  • exhibits a low vapour pressure of 3.1 x 10-7 Torr at 80°C
  • is silicone and halogen free
  • is chemically inert
  • is easy to clean and remove during servicing as it is soluble in hydrocarbon solvents

Please click the links for the typical properties and vapour pressure graphs of Apiezon AP303 Turbo Pump lubricating oil.

AP303 Lubrication Oil and Turbo Pumps

AP303 Turbo Pump oil is used in turbo molecular pumps with conventional bearings which require a high grade lubricant with low vapour pressure. High-speed bearings such as these, with a low bearing load, require oil with a low viscosity. AP303’s polyol ester formulation provides excellent lubricity along with good resistance to ageing, which provides a long service life. It is advised to degass the turbo oil before use to shorten pumping time and prevent foaming.

Buying AP303 Turbo Pump Oil

AP303 turbo pump oil is available from M&I Materials in 1 litre bottles. Please call for a quote today. In the next few weeks 1 litre bottles of AP303 turbo pump oil will become available from our online shop to customers in the UK and Europe.

Larger volumes are available if required - please contact us.

To find out more about Apiezon AP303 turbo pump lubricating oil or any of the other Apiezon family of high vacuum greases, our team of experts are available to answer your questions via our helpline: Apiezon Technical Helpline +44 (0)161 864 5409. Alternatively, please contact us and will be in touch shortly.



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