Insulating member for insulating a transition region between the connector assemblies as well as multi-part pipe having such a

In a multi-part pipe (74), said lead portions (5, 84, 85) end having at least one plug assembly (1, 2, 100, 101, 200, 201) are provided with at least one retaining element (3), said plug part (10) the plug assembly (1, 100, 101) of a line part (84) and coupling part (20) of the plug assembly (2, 200, 201) of the adjacent conduit member (85) by over-insertion and locking of the at least one holding element (3) connectable or connected, is included in the plug-in area (15) of the plug part (10) connected to one another or associated plug assemblies (1, 2, 101, 200) disposed at least one insulating element (4) as an axially compressible closed ring of a (at least in the outer region of the insulating member 4 ) low heat conducting material is formed, which is provided with an inner passage opening (42) in the via plug regions between the connector assemblies in which no heating by z. B. takes place the engine of a vehicle or other heat sources, provide insulation, which enables a cost-effective and at the same time effective insulation during operation and during standstill of the vehicle and protected from inadvertent or accidental removal is.