The service of rubber lining for anticorrosion in production of WPA is introduced, including some key points in design of rubber lining for vacuum equipment, the characteristics of homemade/joint venture/foreign enterprises liner plates and their selection, as well as notices in use.

The design calculation of the large O ring rubber self energized seal (without bolt and nut )used for the vacuum equipment and its application results are introduced.

This paper introduces application of PP vacuum equipment ,the design and calculation of the vacuum equipment are emphasized .

During the process of steam turbine start-up and normal operation,vacuum extraction equipment must run,whether it works normally effects on the vacuum of condenser directly and decide whether turbo-generator can operate safely and economically.