AS-C311 single cartridge mechanical seal

Background Knowledge:
What research results are there about the micro-pits in the surface texture ？
In terms of micro-pit structure, Etsion and Burstein proposed laser machining of porous end-face mechanical seals in 1996, and did theoretical and experimental research to preliminarily discuss the effects of working parameters and micro-porous structure parameters on sealing performance; Liu Yijing et al. processed the pit array on the piston skirt, which played a role in reducing friction and wear, and the minimum friction reduction rate reached 37.8%; Yu Haiwu et al. established a hydrodynamic lubrication model with micro-pit texture. The pit arrangement form further improves the bearing capacity.