Dalian No.3 diffusion pump oil is a deep dewaxing lubricant, produce by vacuum molecular distillation, aluminum adsorption and film degassing processes,etc. This product has a low vapor pressure and a suitable chemical composition; with the ideal ultimate vacuum degree and fast pumping speed; also with the feature of very high thermal oxidation stability, can work for long time even in poor working condition.
No.3 diffusion pump oil can be used as a working fluid for various types of glass and metal diffusion pump, used in high vacuum distillation, vacuum metallurgy, electronics industry and the nuclear industry which has requirements to obtain a high vacuum environment systems.
No.3 diffusion pump oil pump can also be used as a working fluid for straight league vacuum pump.
| Item |
No.3 diffusion pump oil |
| Quality index |
Typical data |
| Kinematic viscosity 50℃mm²/s |
60.2-79.8 |
67.26 |
| Pour point℃ not more than |
-10 |
-14 |
| Flash point opening℃ not lower than |
232 |
284 |
| Mechanical impurities ％ |
no |
no |
| Moisture content ％ |
no |
no |
| Ash content ％ not more than |
0.007 |
0.001 |
| Acid value mgKOH/g not more than |
0.01 |
0.006 |
| Ultimate pressure Pa not more than |
666.61×10-7 |
90*10-7 |
| Saturated vapor pressure pa not more than |
266.644×10-8 |
120*10-8 |
| Carbon Residue ％ not more than |
0.12 |
0.02 |
| Copper corrosion level not more than |
1 |
1 |
| Color comparisons |
|
＜0.5 |
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