Apiezon Vacuum Greases, Lubricants and Sealants
Apiezon high vacuum greases, vacuum sealants and lubricants are favoured around the world because of their quality, consistency and excellent performance in vacuum applications.
M&I Materials Limited have been manufacturing Apiezon products for over 80 years and in Australia, these products are available through ProSciTech.
See here for full collection of vacuum grease, wax and lubricants.
VACUUM GREASE
Things to Consider When Choosing a Vacuum Grease:
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Vacuum level - Compare the vapour pressure of Apeizon greases to the highest level of vacuum and highest temperature your vacuum could reach. If the highest vapour pressure is equal to or higher than the vacuum level then the grease will evaporate, causing contamination and leaks.
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Working temperature – the vapour pressure of materials is highly dependent on temperature, too hot = melting or thermal degradation and too cold = cracking or crazing.
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Compatibility of materials - This relates mostly to o-rings which can be made of viton, silicone, nitrile, nylon, polyurethane, polyethylene or polypropylene. The o-ring can swell or degrade to the point of contaminating the system if there are compatibility issues with the grease.
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Level of lubrication - Base oil viscosity is one property which is typically important in establishing the level of lubrication. Other useful information you might need could be the results of a four ball wear test or the NLGI number.
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Food or pharmaceutical grade applications? - Make sure all materials meet the requirements for the application. Be aware that food and medical grades can have different approvals, make sure that you understand fully the rating your grease requires.
Apiezon Grease |
Key Features |
Compatible Materials ✓ |
Non-compatible Materials ✕ |
AP100: Ultra-high vacuum lubricating grease, silicone free |
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AP101: Anti-seize vacuum grease, silicone free |
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H: High temperature vacuum grease, silicone free |
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L: Ultra-high vacuum grease, silicone free, halogen free |
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M: High vacuum grease, silicone free, halogen free |
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N: Cryogenic high vacuum grease, silicone free, halogen free |
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T: Medium temperature vacuum grease, silicone free |
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PFPE 501: High temperature sealing/lubricating vacuum grease, inert |
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Comparison Data for Apiezon Greases
WAXES & COMPOUNDS
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The Apiezon Wax W range of waxes features three products including the popular Apiezon Wax W, also known as ‘Black Wax’. All three waxes in the Apiezon range can be used as permanent or semi-permanent vacuum sealants or mounting media. Apiezon Wax W is also a perfect etch resist.Apiezon Q Compound sealant is an effective temporary vacuum sealant that is used as a short term solution in situations which do not allow for the immediate dismantling of a system for repair. |
Properties |
Wax W |
Wax W100 
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Wax W40 |
Q Compound |
| Approximate softening point | 80 to 90°C | 50 to 60°C | 40 to 50°C | 40 to 50°C |
| Est. vapour pressure @ 20°C | 4.5 x 10-9Torr | 4.5 x 10-9Torr | 6 x 10-8Torr | 1 x 10-4Torr |
| Temp for application | 130°C | 110°C | 90°C | Ambient |
| Working temperature range | -10 to 75°C | -10 to 45°C | -10 to 35°C | -10 to 30°C |
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Water permeability @ 25°C |
0.8x10-8g/cm/hr/mm Hg | 1.6x10-8g/cm/hr/mm Hg | 1.6x10-8g/cm/hr/mm Hg | - |
| Thermal conductivity @ 20°C |
0.189W/m°C | 0.170W/m°C | 0.177W/m°C | - |
| Specific heat @ 25°C | 1.8J/g | 2.7J/g | 2.9J/g | - |
| Loss tangent | 0.015 | 0.016 | 0.015 | - |
| Permittivity | 2.8 | 2.7 | 2.9 | - |
| Volume resistivity | 6.31 x 10-15Ω cm | 1.64 x 10-15Ω cm | 5.06 x 10-15Ω cm | - |
PUMP OILS
Apiezon AP201 Vapour Booster Pump Oil
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Hydrocarbon based vapour booster pump oil:
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Apiezon AP303 Turbo Pump Oil
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Robust lubricating oil made from a high quality polyol ester base stock:
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Apeizon J Sealing Oil
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High viscosity sealing oil:
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Apeizon K Sealing Oil
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High viscosity sealing oil:
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