High Vacuum NO.3 Dalian Seven Star Diffusion Pump Oil for Vacuum Metalizing Machine Diffusion Pump....

Specification:

Dalian No.3 seven star 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
Item	Quality index	Typical data
Kinematic viscosity 50°Cmm²/s	60.2-79.8	67.26
Pour point °C not more than	-10	-14
Flash point opening°C 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 levelnot more than	1	1
Color comparisons		<0.5