Seal device

A seal device which is provided between a stationary body and a rotational body to suppress a flow of a fluid, the seal device comprising:

• a plurality of ring-shaped first vertical wall portions which extend from any one of the stationary body and the rotational body to the other side and are arranged at predetermined intervals in an axial center direction of the rotational body;
• a ring-shaped second vertical wall portion which extends from any one of the stationary body and the rotational body to the other side as in the first vertical wall portions and is adjacent to the first vertical wall portions, the thickness of which is thicker than the first vertical wall portions in the axial center direction of the rotational body;
• a ring-shaped protrusion portion which corresponds to the second vertical wall portion and protrudes toward the stationary body from the rotational body;
• and
• a plurality of swirl breaker chambers which are arranged in the stationary body at predetermined intervals in a circumferential direction of the rotational body to face the protrusion portion.