Apiezon M vacuum grease (EMS)

Apiezon M high vacuum grease is similar to grease type L, but it contains more wax. Type M is still suitable for very high vacua but not when this requirement coincides with higher than room temperatures. Recommended for applications where a grease of moderately low vapour pressure is required, such as for sealing ground joints on the backing side of oil diffusion pumps, for desiccators and cool or cold high vacuum situations.

We do not recommend Apiezon M for EM use; columns can get hot and then the vapour pressure of Apiezon M may be too high.

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: 40 to 60°C
• Typical working temperature range: 10 to 30°C
• Vapour pressure @ 20°C: 1.77x10^-9Torr
• Relative density @ 20°C: 0.894
• Resistant to radiation: Yes
• Lubricity 4 Ball Test - ASTM.D 2596: 140kg
• Viscosity of molten grease: 413cSt @ 50°C, 29.8cSt @ 100°C
• Coefficient of expansion per °C over 20°C - 30°C: 0.00075
• Thermal conductivity @ 20°C: 0.194W/m°C
• Volume resistivity: 2.6x10¹⁶Ω cm
• Permittivity: 2.1
• Loss tangent: <0.0001
• Surface breakdown at flash over: 28kV
• Electrical strength: 850V/mil

Technical Data

Apiezon M Brochure

NOTE: Formerly called M014

Safety Data Sheet