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Apiezon Mineral grease

Apiezon M grease has been specifically developed for vacuum use, but are also extensively used for non-vacuum purposes in a variety of industrial and scientific applications.
Silicone contamination is of particular concern in surface coating applications such as industrial paint or metal deposition processes, as trace amounts of silicone on surfaces prevent the adherence of paint and poor or incomplete coverage results.
In semiconductor manufacture, yields can be severely affected by silicone contamination.
When using Apiezon hydrocarbon greases, the problems associated with silicone creep and contamination are avoided!
Apiezon M grease is halogen free and as such show a degree of radiation resistance with only a a small increase in viscosity when irradiated with 4 MeV
electrons to approximately 100 Mrads. They are markedly better lubricants at higher irradiation levels than other high vacuumgreases, such as silicones, esters or halogenated products, which decompose at radiation levels of 10Mrads or less.
Apiezon hydrocarbon greases are easily removed by wiping with a soft clean lint free cloth. Any residues of grease can be washed away with
warm soapy water, by using any aromatic hydrocarbon solvent (toluene, xylene) or chlorinated hydrocarbons (trichloroethylene). For a more environmentally friendly solvent, we recommend Limonene.
Apiezon hydrocarbon greases are not soluble in alcohols (ethanol, IPA) or ketones (acetone, MEK) so these cannot be used for cleaning.
Apiezon hydrocarbon greases work when you want them to, but are easily removed when you don’t.


Apiezon grease is compatible with a wide range of o-ring materials including:
Viton, Silicone, Nitrile (>30% nitrile content), Nylon, Polyurethane, Polyethylene, Polypropylene.
Due to their hydrocarbon base Apiezon grease is not compatible with:
-EPDM (ethylene propylene diene M-class rubber), EPR (ethylene propylene rubber), Butyl rubber, PVC seals.


Apiezon Mineral grease is available in:

25 gram tube – article number: 214-236

For other quantities please consult Eurovacuum BV or one of our dealers.

Technical data

Dropping point ASTM.D 566-02: °C: 40 to 60, °F: 104 to 140
Typical working temperature range:°C: 10 to 30, °F: 50 to 86
Vapour pressure @ 20°C / 68°F, Torr: 1.7 x 10-9
Relative density @ 20°C / 68°F: 0.894
Resistant to radiation: Yes
Outgassing characteristics
ASTM .E 595 – 93(2003)e1
TML: –
Lubricity 4 Ball Test
ASTM.D 2596-97(2002)e1, kg: 140
Viscosity of molten grease, cSt
@ 50°C / 122°F: 413
@ 100°C / 212°F: 29.8
Coefficient of expansion per °C
over 20°C-30°C: 0.00075
Thermal conductivity @ 20°C, w/m°C: 0.194
Volume resistivity, Ω cm: 2.6 x 10E16
Permittivity: 2.1
Loss tangent: <0.0001
Surface breakdown at flash over, Kv: 28
Electrical strength, V/mil(0.”001): 850

Safety Data Sheet

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