Main parameters of sealing ring on hydraulic shaft seal for centrifugal pump;

Construction of pressure sealing and sealing ring;

Reinforced nylon with good mechanical properties and friction characteristics was selected to manufacture centrifugal pump sealing ring.

Improvements of the Seal Rings of 12M-12×4Type Centrifugal Pumps;

Aluminum silicon carbide packaging housing with metal seal ring can be produced successfully by combination of compression molding for SiC preform and vacuum pressure infiltration.

The dynamic characteristic of the seal ring and its effect on rotor vibration are analyzed and computed.

Structure and development of floating ring seals;

We introduced the structure and working principle of floating ring seal of centrifugal compressor, and analysed the reason for floating ring seal failure.

This article introduces the working principle, structural types and characteristics and the performance inspection of the floating ring seals and analyzes several factors which may affect oil leakage rate of the floating ring seals, whose aim is for reference for design and test floating ring seals.

Metallic oxide ceramic coat is coated on dynamic sealing caulking ring of roll bearing of 430 and 340 chuck mill,which is imported from foreign,used of plasma spraying process.

There are several difficult problems existing in the rich-gas compressor of catalytic cracking unit(CCU),such as internal leakage of floating-ring seal and heavy pollution of lubricating oil.

This paper analyzes the typical fault of the high speed compressor after the floating-ring seal used in it and provides the method to resolve the fault.

Along with development of sealing technology, the normal floating-ring seal adopted in compressor appear more and more problems.