Exempt from seal structure

The utility model relates to a seal structure, specific exempt from seal structure that says so belongs to circuit breaker housing seal structure technical field. It includes circuit breaker casing, sealing washer and top sealing plate, and the inboard edge in circuit breaker casing upper end is equipped with the sealed recess of U -shaped structure, the sealed embedded dress sealing washer of recess, circuit breaker casing upper end is equipped with top sealing plate, and top sealing plate connects the circuit breaker casing through a plurality of subassemblies that compress tightly to compress tightly the sealing washer in sealed recess, the sealing washer is equipped with sealing ring groove, sealed recess and circuit breaker casing integrated into one piece towards sealed groove end face center. The utility model discloses a setting up of shrouding hem makes between top sealing plate and the sealing washer contact sealing performance better, sealed recess and circuit breaker casingadopt the preparation of