Lubrication And Sealing Treatment Of Sf6 Circuit Breaker Operating Mechanism

When assembling or maintaining the sf6 circuit breaker operating mechanism, applying neutral petroleum jelly to the flange face outside the sealing ring in the operating mechanism is a common and recommended practice. According to the equipment manual, HL8 or HL10 PTFE grease is recommended for the gas-contacting parts of the sf6 circuit breaker spring mechanism components; while for the flange outside the sealing ring, neutral petroleum jelly or No. 2 antifreeze grease is recommended.

This practice helps maintain proper contact between the sealing ring and the flange face, providing a degree of elastic cushioning under pressure or temperature changes. This reduces wear caused by direct friction between the metal and rubber/plastic seals, contributing to the long-term stability of the mechanism.