A liquid-sealed cartridge suitable for a liquid to be transferred by a centrifugal force (F10) generated when the liquid-sealed cartridge is rotated around a rotation shaft (R10), the liquid-sealed cartridge 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 (R10), when the liquid-seal cartridge is fitted to a rotation shaft (R10), whereby the liquid-sealed cartridge is mounted on an apparatus so as to be rotatable around the rotation shaft (R10) wherein when the seal receives a pressing force (F20), 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 (R10) relative to the other portion of the outer peripheral portion, when the liquid-sealed cartridge is fitted to the rotation shaft (R10), whereby the liquid-sealed cartridge (R10) is mounted on the apparatus so as to be rotatable around the rotation shaft (R10) characterized in that: in the outer peripheral portion of the seal , a thickness of the one portion is set to be greater than a thickness of the other portion , and a position of one portion of the seal is set such that the centrifugal force (F10) is applied in a direction in which the seal inclined by the pressing force (F20) 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 (R10), when the liquid-seal cartridge is fitted to a rotation shaft (R10), whereby the liquid-sealed cartridge is mounted on an apparatus so as to be rotatable around the rotation shaft (R10) wherein when the seal receives a pressing force (F20), 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 (R10) relative to the other portion of the outer peripheral portion, when the liquid-sealed cartridge is fitted to the rotation shaft (R10), whereby the liquid-sealed cartridge (R10) is mounted on the apparatus so as to be rotatable around the rotation shaft (R10) characterized in that: in the outer peripheral portion of the seal , a thickness of the one portion is set to be greater than a thickness of the other portion , and a position of one portion of the seal is set such that the centrifugal force (F10) is applied in a direction in which the seal inclined by the pressing force (F20) is further inclined. in the outer peripheral portion of the seal , a thickness of the one portion is set to be greater than a thickness of the other portion , and a position of one portion of the seal is set such that the centrifugal force (F10) is applied in a direction in which the seal inclined by the pressing force (F20) is further inclined. <EOS>