Apiezon^® L is a silicone and halogen free hydrocarbon grease that was specifically developed for vacuum use, but is also suitable for a variety of industrial and scientific applications. Apiezon^® L has the best vapor pressure of the Apiezon greases, , which makes it a suitable for use in the ultra-high vacuum (UHV) range. Apiezon^® L grease resists the “creep” phenomenon, so it will not contaminate or interfere with analytical techniques such as IR and MS. The L grease is approved by industries all over the world including: The European Space Agency, Matra Marconi, NASA, and NATO. Apiezon^® L also contains built-in resistance to irradiation and is a better lubricant than ester silicones and halogenated paraffins, which decompose at levels of 10 Mrads or less. The complex structure and high molecular weight of Apiezon^® L grease gives it strong absorption properties to be used as a stationary phase in gas chromatography. Apiezon^® L grease is specifically formulated to maintain efficient gas seals in the high-performance vacuum pump industry.

Features

• An ideal general-purpose vacuum grease and ground-glass joint sealant
• Silicone and halogen free
• Widely used as a stationary phase in GLC
• Ultra-high vacuum range
• Ambient temperatures
• Radiation resistant (100 Mrads)
• Excellent lubricity

Removal

Apiezon^® L grease has no contamination effect on electrical equipment and is easily removed through use of water, soapy water, hydrocarbon solvents (Limonene, Toluene, Xylene) or chlorinated solvents (Trichloroethylene). When Apiezon^® L is removed, it also takes away trace impurities that are not removed by solvents alone.

Specifications Table

Vapor Pressure	@20°C: 7 x 10-11
Specific Gravity	0.896 (g/cc)
Melting Point	42-52 (°C)
Temperature Range	10-30 (°C)
Thermal Conductivity	@20°C: 0.194 (w/m °C)
Lubricity 4 Ball Test	150 (kg)
Outgassing Characteristics	TML: <1% CVCM: <0.1%
Viscosity of Molten Grease	@50°C (cP), 766 @100°C (cP), 62.3
Radiation Resistance	Yes
Coeff. of Expansion	20°C-30°C: 0.00076 cm/°C
Volume Resistivity	1.2 x 1016 (ohm cm)
Permitivity	2.3
Loss Tangent	<0.0001
Surface Breakdown at Flash Over	24 (kV)
Electric Strength	730 (V/mil)

Vacuum Properties

Apiezon^® L is a silicone and halogen free hydrocarbon grease that was specifically developed for vacuum use, but is also suitable for a variety of industrial and scientific applications. Apiezon^® L has the best vapor pressure of the Apiezon greases, , which makes it a suitable for use in the ultra-high vacuum (UHV) range. Apiezon^® L grease resists the “creep” phenomenon, so it will not contaminate or interfere with analytical techniques such as IR and MS. The L grease is approved by industries all over the world including: The European Space Agency, Matra Marconi, NASA, and NATO. Apiezon^® L also contains built-in resistance to irradiation and is a better lubricant than ester silicones and halogenated paraffins, which decompose at levels of 10 Mrads or less. The complex structure and high molecular weight of Apiezon^® L grease gives it strong absorption properties to be used as a stationary phase in gas chromatography. Apiezon^® L grease is specifically formulated to maintain efficient gas seals in the high-performance vacuum pump industry.

Shelf Life

It is strongly recommended using all fluids and greases at the time of receipt, however when storage is necessary, rotate older stock into use first and observe the recommended parameters listed below.

Apiezon

All Apiezon products have a shelf life of 10 years if unopened in their original container and stored at ambient temperatures. If the product has been opened, resealed and then stored in a clean, dry, dark environment under ambient conditions in the original container, it should last up to 10 years, but this is not guaranteed.