Mineral oils cover basic industrial applications such as the pumping of air and noble gases as well as small amounts of water vapor. They are suitable for low to moderate operating temperatures. Synthetic oils have better viscosity properties than mineral oils and are therefore suitable for more demanding applications with higher process loads (e.g. acids, chemicals) and higher operating temperatures. Due to their higher resistance, synthetic oils have an up to four times longer lifetime than conventional mineral oils, depending on the application.