Moulded piece consisting of plastic, in particular a pipe connection piece, for liquid pipe lines

摘要

A moulded piece consisting of plastic, in particular a pipe connection piece, is intended for liquid pipelines. To reduce the sound emission from this moulded piece as much as possible, and to secure it in the masonry or the like, the moulded piece has a sheathing of a synthetic elastomer which is applied by injection moulding, reaction injection moulding or by vulcanization pressing such that it is ready to fit. This elastomer has a Shore A hardness of 40 to 90, preferably 50 to 70.