A liquid-sealed cartridge (10, 200) suitable for a liquid to be transferred by a centrifugal force generated when the liquid-sealed cartridge (10, 200) is rotated around a rotation shaft, the liquid-sealed cartridge (10, 200) comprising: a liquid storage portion configured to store the liquid therein; a seal having an outer peripheral portion connected to the liquid storage portion, the seal being configured to seal the liquid storage portion; a flow path connected to the liquid storage portion via the seal, suitable for the liquid in the liquid storage portion to be transferred therethrough by the centrifugal force in a direction away from the rotation shaft, when the liquid-seal cartridge is fitted to a rotation shaft, whereby the liquid-sealed cartridge (10, 200) is mounted on an apparatus so as to be rotatable around the rotation shaft wherein when the seal receives a pressing force, the seal is configured to be inclined in a pressing direction, with one portion of the outer peripheral portion thereof remaining connected with the liquid storage portion, and the other portion of the outer peripheral portion being separated from the liquid storage portion, wherein the one portion of the outer peripheral portion is distant from the rotation shaft relative to the other portion of the outer peripheral portion, when the liquid-sealed cartridge (10, 200) is fitted to the rotation shaft, whereby the liquid-sealed cartridge is mounted on the apparatus so as to be rotatable around the rotation shaft characterized in that: in the outer peripheral portion of the seal (50, 60), a thickness of the one portion (52, 62) is set to be greater than a thickness of the other portion (53, 63), and a position of one portion (52, 62) of the seal is set such that the centrifugal force is applied in a direction in which the seal inclined by the pressing force is further inclined. a liquid storage portion configured to store the liquid therein; a seal having an outer peripheral portion connected to the liquid storage portion, the seal being configured to seal the liquid storage portion; a flow path connected to the liquid storage portion via the seal, suitable for the liquid in the liquid storage portion to be transferred therethrough by the centrifugal force in a direction away from the rotation shaft, when the liquid-seal cartridge is fitted to a rotation shaft, whereby the liquid-sealed cartridge (10, 200) is mounted on an apparatus so as to be rotatable around the rotation shaft wherein when the seal receives a pressing force, the seal is configured to be inclined in a pressing direction, with one portion of the outer peripheral portion thereof remaining connected with the liquid storage portion, and the other portion of the outer peripheral portion being separated from the liquid storage portion, wherein the one portion of the outer peripheral portion is distant from the rotation shaft relative to the other portion of the outer peripheral portion, when the liquid-sealed cartridge (10, 200) is fitted to the rotation shaft, whereby the liquid-sealed cartridge is mounted on the apparatus so as to be rotatable around the rotation shaft characterized in that: in the outer peripheral portion of the seal (50, 60), a thickness of the one portion (52, 62) is set to be greater than a thickness of the other portion (53, 63), and a position of one portion (52, 62) of the seal is set such that the centrifugal force is applied in a direction in which the seal inclined by the pressing force is further inclined. in the outer peripheral portion of the seal (50, 60), a thickness of the one portion (52, 62) is set to be greater than a thickness of the other portion (53, 63), and a position of one portion (52, 62) of the seal is set such that the centrifugal force is applied in a direction in which the seal inclined by the pressing force is further inclined.