APIEZON n L-25G Vacuum grease without silica and halogen
L-25G Ultra-high Vacuum grease has excellent vapor pressure characteristics and can be used in ultra-high vacuum environments. The vacuum degree of Apiezon L-type vacuum sealing grease is 7.0x10 ^ (-11) Torr
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Introduction
Apiezon L-25GUltra-high vacuum greasebeApiezon L series ultra-high vacuum grease with a content of 25g,Also known as grease, it is a silicone-free, halogen-free, ultra-high vacuum grease suitable for scientific and industrial use. Apiezon L grease has very good vapor pressure characteristics in all Apiezon products, making it suitable for use in ultra-high vacuum applications. Grease is often used by credible organizations such as the European Space Agency, NASA and NATO.
Apiezon L vacuum grease is typically used at room temperature (typically 10 to 30°C / 50 to 86°F). Shelf life of 10 years (from the date of manufacture)
Features
Apiezon L Vacuum Grease is a silicone-free, halogen-free, ultra-high vacuum grease with the following features:
The vapor pressure displayed at 20°C is extremely low at 7x10-11 torr
Free from contamination issues associated with silicone-based greases, such as 'creep' or 'hold-up'
Provides very good lubricating properties
It is recommended to use at room temperature
There is built-in radiation protection
With a strong 'adsorption' ability, it absorbs potentially harmful greases and chemical impurities on metal and glass surfaces
Easy to clean and remove, easily wiped off with a soft, clean lint-free cloth that dissolves in hydrocarbons and chlorinated solvents
Note: Since Apiezon hydrocarbon-based greases are insoluble in alcohol (B alcohol, isopropanol) or ketones (acetone, butanone), cause This cannot be cleaned with such substances.
Applications
1. It is often used for scientific and industrial sealing and lubrication
2. Manufacture and maintenance of high-performance Vacuum Pumps
3. For analytical techniques, such as infrared or mass spectrometry, which require avoiding contamination of the sample.
4. High radiation applications
5. It is often used as a stationary phase in gas chromatography analysis.
compatibility
1) Apiezon L-type grease can be used with a variety of O Ring materials are compatible, including:Fluoroelastomer, silicone, nitrile (> 30% nitrile content), nylon,polyurethane, polyethylene, polypropylene;
2) Apiezon L-type grease has a hydrocarbon matrix, so it is not compatible with the following substances: EPDM, ethylene propylene rubber, butyl rubber, PVC sealing ring.
Industry recognized
Apiezon L vacuum grease has beenRecognized by the European Space Agency, NASA, NATO and many other prestigious units.
Apiezon L Vacuum Grease Vapor Pressure Gauge

APIEZON L-25G Vacuum greaseSpecifications
| LIST | VALUE |
|---|---|
| Main purpose | High vacuum |
| Operating temperature range | 10~30℃ |
| Melting point | 42~52℃ |
| vapor pressure | 7.0*10^(-11) Torr |
| Relative density | 0.896 |
| Average molecular Weight | 1300 |
| radiation resistance | Yes |
| Lubricity four-ball test | 150kg |
| deflation characteristics | TML<1%,CVCM<0.1% |
| coefficient of thermal expansion | 0.00076℃ |
| Thermal conductivity | 0.194w/m ℃ |
| Latent heat of fusion | 15.1cal/g |
| melting peak | 32℃ |
| electric field strength | 730 V/mil (0."001) |
APIEZON L-25G Vacuum grease Packing list
Vacuum grease x1
[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.
FAQ
- What is the drip point of grease? What method is used? What is the difference?
- Advantages of Apiezon N Greases and Low Temperature Apiezon N Greases for Freezing
- What is a hydrocarbon based grease?
- Advantages of using Apiezon sealing wax W as an etch resistant material
- Advantages of using Apiezon O-ring sealants and greases
- What is a good temperature range for grease use?
- Appreciation of Apiezon Vacuum grease
- What are the influencing factors to consider when choosing high temperature grease?
- What is the difference between grease and solid lubricant?
- What are the test methods for determining the low temperature performance of greases?


L-25G
L-4KG






