A divided
brush seal comprises a base portion to shut off a sealing fluid side area and environment area, a first end portion having a first connecting face at one side divided end of the base portion, a second end portion having a second connecting face at another divided end of the base portion which connects with the first end portion, a seal
brush having
bristle groups to seal the sealing fluid provided parallel to a supporting face with
coupling one end thereof to a fixed portion which connects with the base plate, wherein the first end portion and the second end portion comprise a first
bristle groups respectively, a wire
diameter of a first
bristle of the first bristle groups is thicker with respect to a wire
diameter of a second bristle of a second bristle groups provided between the first bristle group of the first end portion and the first bristle group of the second end portion, the first bristle group of the respective divided
brush seal and the first bristle group of the other side divided brush seal adjacent thereto are sequentially arranged.