In order to solve the problem of frequent failure of seal to the high speed pump’s mechanical seals for the medium of Propylene,we calculate many times of the parameter of used high speed mechanical seals and find the reason of non-matching between the designing parameter of high speed Mechanical seals in the liquid hydrocarbon and the seals face materials.

Invalidation and improvement of the mechanical seal of HTM main pump;

Causes and prevention of mechanical seal leakage of circulating pump in copper electrolysis system;

Cause Analysis of the Leakage of the Mechanical Seal of the Hot Water Circulating Pumps and Improvements;

Fault Analysis and Retrofits of the Machinery Seal of the Pumps for Softened Water;

Retrofit of the Machinery Seals of the Reflux Pumps of an Ethylene Distillator;

In this paper, the author introduces operating efficiency and mechanical sealing of QL-800 circulation pump,process situation and structure characteristics in operation and approaches and analyzes some situation in its application.

Fan's structural types, aerodynamic design, the three dimension finite element strength check and mechanical sealing was discussed.

The stability of sealing and prolong the life span of mechanical sealing was improved.

Load and loading factor of mechanical seals;

The solution to the leakage in the mechanical seals of the propylene pump;

Progress in the study of mechanical seals with micro-pores face;