A method for producing a liquid-conducting device made of aluminum including a functional surface made of anodized aluminum. A surface of a strip- or layer-shaped aluminum sheet is provided with a masking during a masking phase for producing a processing on the surface of the aluminum sheet and in its structure. The aluminum sheet is processed in an electrolytic process for realizing a functional surface, which is provided with an aluminum oxide layer, on the processing surface, a body surface of the liquid-conducting device, which includes at least one processing surface or one functional surface, being sized as a component of the aluminum sheet during a sizing phase, the liquid-conducting device being separated from the strip- or layer-shaped aluminum sheet during a separating phase.

A closure for drums and containers accommodating sanitary fittings is contemplated. The closure is attached in a manner that avoids any recesses along the interior of the contain