Insertion coupling connection fixing device has sealing ring receiving bead taking flat annular spring element between it and sealing ring

摘要

The insertion coupling fixing device has a bead (2) to receive the sealing ring (3). Its end region is also made to take a flat annular spring element (4), which sits at an angle or vertically between the sealing ring and the bead. In the assembly position, its inner end region projects into the receiving region of the pipe (6) being inserted.