A spout-cap unit, comprising: a spout part including a sealboat, an outlet tube, and a retaining member; and a cap part for closing an outlet of the outlet tube in a closed position of the cap part; wherein the spout part and the cap part are tethered together via at least one tethering member (31, 32) to form the spout-cap unit, the tethering member (31, 32) being coupled with the spout part at one end (31A, 32A) of the tethering member (31, 32) and with the cap part at the opposite end (31B, 32B) of the tethering member (31, 32), wherein the cap part is releasable from the outlet tube of the spout part for providing the cap part in a released state, wherein in said released state the cap part and the spout part remain tethered together via the tethering member (31, 32), the tethering member (31, 32) allowing the cap part to be moved to a retaining position that is positioned away from the outlet of the outlet tube, wherein the cap part or the tethering member (31, 32) can be coupled with the retaining member of the spout part for retaining the cap part at the retaining position, characterised in that the cap part is composed out of at least two elements: - a body element that is manufactured together with the spout part, the body element enclosing the outlet tube of the spout part in a circumferential direction, the body element coupled with the tethering member (31, 32), and the body element being hollow and having open ends (212, 213), and - a plug element manufactured separately from the spout part and the body element, the plug element for closing an open end of the body element, so that when the plug element is received in the body element, the cap part closes the outlet tube of the spout part. a spout part including a sealboat, an outlet tube, and a retaining member; and a cap part for closing an outlet of the outlet tube in a closed position of the cap part; wherein the spout part and the cap part are tethered together via at least one tethering member (31, 32) to form the spout-cap unit, the tethering member (31, 32) being coupled with the spout part at one end (31A, 32A) of the tethering member (31, 32) and with the cap part at the opposite end (31B, 32B) of the tethering member (31, 32), wherein the cap part is releasable from the outlet tube of the spout part for providing the cap part in a released state, wherein in said released state the cap part and the spout part remain tethered together via the tethering member (31, 32), the tethering member (31, 32) allowing the cap part to be moved to a retaining position that is positioned away from the outlet of the outlet tube, wherein the cap part or the tethering member (31, 32) can be coupled with the retaining member of the spout part for retaining the cap part at the retaining position, characterised in that the cap part is composed out of at least two elements: - a body element that is manufactured together with the spout part, the body element enclosing the outlet tube of the spout part in a circumferential direction, the body element coupled with the tethering member (31, 32), and the body element being hollow and having open ends (212, 213), and - a plug element manufactured separately from the spout part and the body element, the plug element for closing an open end of the body element, so that when the plug element is received in the body element, the cap part closes the outlet tube of the spout part. - a body element that is manufactured together with the spout part, the body element enclosing the outlet tube of the spout part in a circumferential direction, the body element coupled with the tethering member (31, 32), and the body element being hollow and having open ends (212, 213), and - a plug element manufactured separately from the spout part and the body element, the plug element for closing an open end of the body element, so that when the plug element is received in the body element, the cap part closes the outlet tube of the spout part.