Mechanical seal on the requirements of the seal ring

Have enough strength and stiffness
Under working conditions (such as pressure, temperature and sliding speed), the deformation should be as small as possible, and the sealing condition can be maintained when the working conditions fluctuate. In particular, the sealing end face should have sufficient strength and certain corrosion resistance to ensure a satisfactory service life.
Good thermal shock resistance
For this reason, the material is required to have a high thermal conductivity and a small coefficient of linear expansion, and it is not cracked when subjected to thermal shock.
Smaller coefficient of friction
The seal ring should have a small coefficient of friction.
Good self-lubricating
If short-term dry friction occurs during work, the seal end face is not damaged. Therefore, the sealing ring should have good self-lubricating properties, and the sealing ring material and the sealing fluid should have good wettability.
Simple structure
The structural stress of the seal ring should be simple and symmetrical. It is preferred to use a monolithic structure or a combined (such as a mounted) seal ring to avoid the use of a sealed end face spray structure.
Seal ring should be easy to manufacture
Installation and maintenance should be convenient and the price should be low.