First of all, the surface hardness of the floating seal ring is relatively high. During production, higher hardness can improve the wear resistance. In order to achieve higher hardness on the surface, an overall quench hardening treatment is required, but quench hardening will cause The amount of deformation caused by metal damage.
If the surface roughness of the floating seal ring is large, the degree of wear will increase and the wear resistance will be weakened. Under the condition of boundary lubrication, there can be enough space to store lubricating oil, which can reduce friction and prolong the service life.