Closure, membrane seal and cover assembly for closing e.g. bottle of water, has head extended by main body including inner space provided with container that rests on o-ring seal

摘要

The assembly has a head (1) extended by a main body (3) including an inner space (4) provided with a container (5) that rests on an o-ring seal. The seal is structured as annular layers including transversal channels (7) allowing passage of solutions contained in the container towards the space. The head is provided with an inner thread (2) permitting screwing on neck of a receptacle (8).