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Application filed by Goluban Bošković, Miomir MarkovićfiledCriticalGoluban Bošković
Priority to YU7003ApriorityCriticalpatent/YU7003A/en
Publication of YU7003ApublicationCriticalpatent/YU7003A/en
Individual rubber sealing is in use that over the upper flange (5) of the middle part (6) and lower flange (7) this is to provide impervious joint between head (1) and the individual rubber sealing (4). The sealing (4) is by its inner outline (8) tied to the drew-in pipe end (10) that makes the impervious joint.