In this paper

two common sealing structure features and related design parameters for SF6 insulation gas in metal enclosed transformer and high voltage apparatus are illustrated. The design principle

key factors of sealing structure

application features

compression of the sealing material

the advantage and disadvantage of the two structure are explained. The feature of common sealing material

auxiliary measure for the sealing

operation life of sealing ring and match of sealing result are pointed. And also the application of the two types of structure in the sulfur hexafluoride gas transformer and high voltage products are introduced.