A method and a device for metering a medicament, preferably a liquid, are proposed. In order to achieve an improved metering accuracy, a first component manufactured in batches, such as a shaped seal, is combined with a second component, such as a delivery tube, of a matching group, the matching group being selected as a function of at least one decisive significant magnitude of the respective batch and being characterized by an essential magnitude of the second component, so as to achieve an optimum seal between these components.
