Apiezon L vacuum grease (EMS)

Apiezon L ultra high vacuum grease is a well-proven and recommended high-vacuum grease for electron beam instruments. It is a petroleum hydrocarbon grease, containing no additives. Very low vapour pressure, high vacuum grade. Widely used in electron microscopy where moderately high column temperatures and high vacuum requirements demand a vacuum grease with extraordinary characteristics and also used in the stationary phase of gas liquid chromatography, and may be used on all ground joints in a vacuum system (not for stopcocks).Features:Very high vacuum rangeAmbient temperaturesCryogenic usesRadiation resistantAdded cushioningExcellent lubricantsSilicone & halogen freeEasily removedProperties:Dropping point - ASTM.D 566: 42 to 52°CTypical working temperature range: 10 to 30°CVapour pressure @ 20°C: 7x10...

Apiezon L ultra high vacuum grease is a well-proven and recommended high-vacuum grease for electron beam instruments. It is a petroleum hydrocarbon grease, containing no additives. Very low vapour pressure, high vacuum grade. Widely used in electron microscopy where moderately high column temperatures and high vacuum requirements demand a vacuum grease with extraordinary characteristics and also used in the stationary phase of gas liquid chromatography, and may be used on all ground joints in a vacuum system (not for stopcocks).

Features:

  • Very high vacuum range
  • Ambient temperatures
  • Cryogenic uses
  • Radiation resistant
  • Added cushioning
  • Excellent lubricants
  • Silicone & halogen free
  • Easily removed

Properties:

  • Dropping point - ASTM.D 566: 42 to 52°C
  • Typical working temperature range: 10 to 30°C
  • Vapour pressure @ 20°C: 7x10-11Torr
  • Relative density @ 20°C: 0.896
  • Resistant to radiation: Yes
  • Outgassing characteristics - ASTM .E 595: <1% TML, <0.1% CVCM
  • Lubricity 4 Ball Test - ASTM.D 2596: 150kg
  • Viscosity of molten grease: 766cSt @ 50°C, 62.3cSt @ 100°C
  • Coefficient of expansion per °C over 20°C - 30°C: 0.00076
  • Thermal conductivity @ 20°C: 0.194W/m°C
  • Volume resistivity: 1.2x1016Ω cm
  • Permittivity: 2.3
  • Loss tangent: <0.0001
  • Surface breakdown at flash over: 24kV
  • Electrical strength: 730V/mil
  • Solubility is as follows: in ethanol at 20°C-0.003%; 60°C-0.005%; 100C-0.011%; 150°C-0.011%.

Technical Data

Apiezon L Brochure

Safety Data Sheet

Updated: 07-02-2025
Code Title Pack Size Availability Price Updated: 07-02-2025
M1-L-00025-X Apiezon L vacuum grease (EMS) 25g 0 in stock (?) $283.00 AUD