The utility model relates to a gu seal utmost point post and use this solid gas insulation switch equipment that seals utmost point post, gas insulation switch equipment include the gas tank and set up solid utmost point post and the isolator of sealing in the gas tank, seals extremely that the post includes the packaging body and the vacuum interrupter that sets firmly in the packaging body is qualified for the next round of competitions on and admittedly, and isolator includes static contact and movable contact sword is equipped with naked rotation connection structure on being qualified for the next round of competitions on, the movable contact sword with it is articulated continuous to rotate connection structure. Be provided with naked rotations connection structure gu seal utmost point post on being qualified for the next round of competitions on, the movable contact sword can directly articulate on the last rotation connection structure who is qualified for the next round of competitions, be qualified for the next round of competitions to have constituted on like this and touch the blade holder, has realized touching blade holder and vacuum interrupter's integration design, touches blade holder, explosion chamber run -on and the scattered setting of vacuum interrupter in comparing prior art, has improved the compact structure of product greatly.