A sealing device located between an inner member and an outer member of a rolling bearing for sealing a gap between the inner member and the outer member that rotate relative to each other, comprising: an annular inner sealing member that is to be fixed to the inner member; and an annular outer sealing member that is to be fixed to an internal surface of a hole of the outer member, the inner sealing member being in slidable contact with the outer sealing member, the inner sealing member comprising: a sleeve that is to be fixed to the inner member; and a flange integrally connected with an atmosphere side end portion of the sleeve and expanding radially outside the sleeve, the outer sealing member comprising: a rigid part formed of a rigid material; and a resilient part fixed to the rigid part and formed of an elastic material, a seal lip being formed in the resilient part, the seal lip being in slidable contact with the sleeve of the inner sealing member, a dust lip being formed in the resilient part, the dust lip being in slidable contact with the flange of the inner sealing member, the rigid part comprising: a cylindrical section that is to be engaged in the internal surface of the hole of the outer member; a circular annular section integrally connected with an atmosphere side end portion of the cylindrical section and extending inward of the cylindrical section in radial directions, characterized in that the rigid part further comprises: multiple axial direction projections projecting from the circular annular section toward an atmosphere side along an axial direction of the outer sealing member; and at least one guide portion (44, 78, 80, 90) configured to guide pulling the outer sealing member by means of a hand or by means of at least one jig. an annular inner sealing member that is to be fixed to the inner member; and an annular outer sealing member that is to be fixed to an internal surface of a hole of the outer member, the inner sealing member being in slidable contact with the outer sealing member, the inner sealing member comprising: a sleeve that is to be fixed to the inner member; and a flange integrally connected with an atmosphere side end portion of the sleeve and expanding radially outside the sleeve, a sleeve that is to be fixed to the inner member; and a flange integrally connected with an atmosphere side end portion of the sleeve and expanding radially outside the sleeve, the outer sealing member comprising: a rigid part formed of a rigid material; and a resilient part fixed to the rigid part and formed of an elastic material, a seal lip being formed in the resilient part, the seal lip being in slidable contact with the sleeve of the inner sealing member, a dust lip being formed in the resilient part, the dust lip being in slidable contact with the flange of the inner sealing member, the rigid part comprising: a cylindrical section that is to be engaged in the internal surface of the hole of the outer member; a circular annular section integrally connected with an atmosphere side end portion of the cylindrical section and extending inward of the cylindrical section in radial directions, a rigid part formed of a rigid material; and a resilient part fixed to the rigid part and formed of an elastic material, a seal lip being formed in the resilient part, the seal lip being in slidable contact with the sleeve of the inner sealing member, a dust lip being formed in the resilient part, the dust lip being in slidable contact with the flange of the inner sealing member, the rigid part comprising: a cylindrical section that is to be engaged in the internal surface of the hole of the outer member; a circular annular section integrally connected with an atmosphere side end portion of the cylindrical section and extending inward of the cylindrical section in radial directions, a cylindrical section that is to be engaged in the internal surface of the hole of the outer member; a circular annular section integrally connected with an atmosphere side end portion of the cylindrical section and extending inward of the cylindrical section in radial directions, characterized in that the rigid part further comprises: multiple axial direction projections projecting from the circular annular section toward an atmosphere side along an axial direction of the outer sealing member; and at least one guide portion (44, 78, 80, 90) configured to guide pulling the outer sealing member by means of a hand or by means of at least one jig. multiple axial direction projections projecting from the circular annular section toward an atmosphere side along an axial direction of the outer sealing member; and at least one guide portion (44, 78, 80, 90) configured to guide pulling the outer sealing member by means of a hand or by means of at least one jig.