Requirements for mechanical seal rings

The main components of the mechanical tungsten carbide seal rings are the moving ring and the static ring, which are collectively referred to as the centrifugal hot oil pump seal ring. The quality of the tungsten carbide seal rings determines the performance and life of the mechanical seal, so the requirements for the seal ring are higher. There are many materials to choose from, but generally cemented carbide materials are used. Why? What are the characteristics of cemented carbide mechanical seal rings to meet the requirements of mechanical seal rings?

1. The cemented carbide sealing ring has sufficient strength and rigidity to maintain a good state without damage and deformation under the condition of high pressure, high temperature and high speed, and still has good sealing performance.

2. Carbide sealing ring has sufficient hardness and corrosion resistance, and is very tolerant to sealing medium. Whether it is granular or strong corrosive liquid, it can be well sealed and can work for a long time.

3. Carbide sealing ring has good thermal shock resistance. It has high thermal conductivity and small linear expansion coefficient, so it will not crack when subjected to thermal shock.

4. The cemented carbide sealing ring has a small friction coefficient and good self-lubrication, and the friction occurs for a short time during the work, and the sealing end face is not damaged.

It is precisely because the cemented carbide sealing ring has so many excellent characteristics that it can meet the requirements of the mechanical sealing ring and become the preferred sealing ring in everyone's mind.