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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|
|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|