A washing machine is configured to perform washing using carbon dioxide and includes a first housing that defines an inner space and an opening, a drum disposed in the inner space of the first housing and configured to accommodate laundry, a barrier that covers the opening of the first housing and is coupled to the first housing, a second housing that covers a surface of the barrier and is coupled to the first housing, and a motor assembly coupled to the barrier. The motor assembly includes a stator, a rotor configured to rotate the drum, a bearing housing, a rotary shaft disposed in the bearing housing, the rotary shaft having a first end coupled to the rotor and a second end coupled to the drum, and a first sealing part and a second sealing part that are disposed in the bearing housing and coupled to the rotary shaft.