Rotor seals are among the most widely used seals for machine elements. They are seated between two opposing machine parts, one of which rotates and the other is stationary. A rotor seal’s criteria include the circumferential speed of the shaft to be achieved during operation, freedom from leakage in the case of oil seals, compressive strength, and high chemical and thermal resistance. They can be met by special sealing profiles made of high-tech sealing materials that are tailored to the application.