Oil seal vacuum pump is chosen for its reliability, low cost and mature technology. The use of oil allows for higher compression ratios and better internal cooling properties. Oil seal vacuum pumps have proven their performance in harsh applications such as food, heat treatment, coating, and reliability in long period applications such as mass spectrometry.

In various vacuum pump technology, rotary vane pump is considered to be positive displacement pump. These pumps work by mechanically capturing a fixed volume of gas and moving it through the pump, thereby creating low pressure on the inlet side.

They are often referred to as "wet" pumps because the gas being pumped is exposed to oil, which is used as a lubricant to achieve lower pressure limits. The oil has been carefully selected and designed for use.

Rotary vane vacuum pump is available in single and two versions. The pressure limit of two pumps is lower than that of a single pump.

The oil seal pump has good tolerance to water vapor by opening the gas trap. To prolong the service life of the vacuum pump, change the oil as part of routine maintenance.