True or False Question

A mechanical seal is composed of a rotating ring and a stationary ring! √

Wrong, there are also O-rings, moving ring and stationary ring seats, springs, etc

The main components are the moving ring and the stationary ring. There are others as well. It’s too one-sided.

Wrong. Although mechanical seals vary in structure, they must have four main components: (1) the sealing surface composed of the rotating ring and the stationary ring, which is the core of a mechanical seal. Mechanical seals represent an improvement over the traditional circular surface sealing design, and the sealing performance of this surface is a key indicator of the technical level of the mechanical seal; (2) a buffering and compensation mechanism whose main component is an elastic element – this is essential for ensuring reliable sealing performance; (3) auxiliary sealing rings, which are necessary for addressing minor leakage issues outside of the sealing surface; (4) a transmission mechanism that drives the rotating ring to rotate along with the shaft. This is a fundamental requirement for mechanical seals to function as dynamic seals, and thus the transmission mechanism is also one of the essential components of a mechanical seal.