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Specialist Materials for Industry and Science



Apiezon N Grease and Cryogenics

Apiezon N Grease is one of the most widely used vacuum greases in cryogenics. This cryogenic grease is specially formulated to exhibit craze-free performance characteristics at low temperatures and withstand frequent cycling between cryogenic temperatures as low as -273°C and + 30°C.

Apiezon’s cryogenic N Grease is hydrocarbon based and does not suffer from the problem of creep, traditionally associated with indium. Its ability to fill the micro pores between adjacent surfaces improves thermal transfer across the complete surface area.

As a thermal coupling medium, Apiezon N grease is important for any system that is required to reach cryogenic temperatures quickly, such as coupling cooling systems, superconducting magnets, cryostats or temperature sensors. Low levels of magnetic susceptibility also make it ideal for superconductor manufacturing applications.

Apiezon N Grease is also ideal for sensor mounting, pliable at room temperature; it solidifies at cryogenic temperatures to allow for easy mounting and removal of sensors without causing damage. Apiezon N grease is used to improve thermal contact between the sample and sample boat or the sample boat and cold finger of a cryostat. This thermal contact grease ensures that samples are at the lowest possible temperatures to improve test sensitivities.

To achieve the best possible vacuum, low vapour pressures are imperative for any vacuum sealing medium. Apiezon N grease exhibits extremely low vapour pressures at ambient temperatures, which are further improved by reductions in temperature to the cryogenic region.

Apiezon N Grease is widely used to ensure vacuum tight seals in vacuum lines, cold traps, and optical parts on electron microscopes, ground glass joints, stopcocks, taps, Schlenk lines and liquid helium hoses. It can also be used to improve o-ring seals.

For more information on the definition of cyryogenics and an interesting application of "overclocking" high specification computers click here. Details of another user application of N grease in the Asgard II research project can be found here.

To find out more about our creep resistant cryogenic grease please speak to one of our advisors today on +44 (0)161 864 5419. Alternatively, please contact us and one of our team will be in touch shortly.

Benefits of Apiezon N Grease for Cryogenics

  • Withstands thermal cycling between temperatures of -273°C and + 30°C
  • Increases thermal conductivity at liquid helium temperatures
  • Craze free performance
  • Silicone-free, highly creep resistant
  • Cost effective
  • Easy to use and remove
  • 10 year shelf life

  • Apiezon
  • Metrosil
  • Midel
  • Wolfmet

Products of M&I Materials Ltd.