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 |
T |
Main area of
application |
Medium Temp |
Melting Point:
ASTM.D 566 |
°C
°F |
112-137
233-278 |
| Working temp. range |
°C
°F |
10-120
50-248 |
Vapor Pressure
Torr @20°C |
4.6x10-9 |
| Relative Density 20°C |
0.912 |
| Radiation Resistance |
No |
Outgassing
Characteristics
ASTMS .E
595-90 |
TML
CVCM |
-
- |
Lubricity 4 Ball Test
ASTM .D 2763
(IP 239), Kg |
- |
Viscosity of molten
grease, cP |
50°C
100°C |
-
- |
Coefficient of
expansion per °C
over 20°C-30°C |
0.00073 |
Thermal conductivity,
w/m°C |
-
- |
Latent heat of fusion,
cal/g |
- |
| Fusion Peak °C |
* |
| Vol. resistivity, cm |
3.3x1012 |
| Permittivity |
2.3 |
| Loss tangent |
<0.0001 |
Surface breakdown
at flash over, kV |
24 |
| Electric strength, V |
730 |
*Too close to room temperature to measure
Apiezon Grease; Type T
Type T is designed for lubricating glass taps and for general purposes. Has a melting point of 125°C and has an estimated vapor pressure @ 20°C of 5x10-9 torr. Although type T is useful at higher temperatures, it can also be used at ambient temperatures.
Temperature range: 0-120°C.