Diamond-coated mechanical seal faces greatly outperform other materials in terms of friction, heat generation and dissipation, power absorption and tolerance to dry-running. Although not made for continuous dry running in most applications, diamond faces completely eliminate the threat of seal damage for occasional short-term lack of seal lubrication. Their tribological properties guarantee remarkable power savings, with big economic and environmental improvements on all industrial operations. Such savings usually reach over 50% of the total mechanical seal energy consumption.