Apiezon Greases are unique products, designed for use in high vacuum work:
- Excellent lubricants
- High purity, low vapor pressure – non-contamination in analysis
- The working temperature range of each grease is dependent on the grade that is used
- Easily applied, easily cleaned off
- Silicone free. This benefits scientific users because the risk of sample contamination and consequently the risk of interference in analytical techniques such as infra-red or mass spctrometry, etc. is avoided
- Approved by NASA and NATO
| Typical Property |
H |
Main area of
application |
Cryogenic |
Melting Point:
ASTM.D 566 |
°C
°F |
does not melt |
| Working temp. range |
°C
°F |
-10-240
14-464 |
Vapor Pressure
Torr @20°C |
1.7x10-9 |
| Relative Density 20°C |
0.918 |
| Radiation Resistance |
No |
Outgassing
Characteristics
ASTMS .E
595-90 |
TML
CVCM |
<1.0%
<0.1% |
Lubricity 4 Ball Test
ASTM .D 2763
(IP 239), Kg |
250 |
Viscosity of molten
grease, cP |
50°C
100°C |
-
- |
Coefficient of
expansion per °C
over 20°C-30°C |
- |
Thermal conductivity,
w/m°C |
-
- |
Latent heat of fusion,
cal/g |
- |
| Fusion Peak °C |
25 |
| Vol. resistivity, cm |
- |
| Permittivity |
- |
| Loss tangent |
- |
Surface breakdown
at flash over, kV |
- |
| Electric strength, V |
- |
*Too close to room temperature to measure
Apiezon Grease; Type H
Type H grease is designed for high temperatures (-10 to +240°C) in a wide range of applications in both science and industry. With good "friction", grease H is ideal for use with laboratory glassware, but combined with properties of high thermal conductivity, it is the perfect choice for the electronics and space industries where heat sink media require adhesion.
Grease H is a filled hydrocarbon which exhibits excellent thermal conductivity, and strong absorption properties. The capability to absorb greasy or chemical impurities on metal and glass surfaces is a value "tool" required by electronic industries.