Cooling, controlling contamination, reducing friction, and creating fluid seals are just a few of the many important responsibilities the lubricant serves.
The chosen lubricant must fill all of these roles effectively and efficiently to promote healthy and long equipment life. Vacuum pump applications are somewhat unique due to the relationship between the oil’s volatility and vapor pressure. An oil that is more volatile is more likely to turn from a liquid to a vapor as temperatures increase. Because vacuum pumps operate with such tight tolerances in regard to pressure, any differentiating factor can be detrimental to the intended operation of the pump.
Choosing a lubricant with a low vapor pressure will ensure the system operates efficiently.