US Patent 10344895 Lead-through device for a wall

A lead-through device for a wall comprising first and second pipe fitting elements. A supporting element is connected to the second pipe fitting element by way of an elastic portion which allows limited displacement of the supporting element in relation to the second pipe fitting element at least in the direction of a longitudinal center axis. The primary sealing toward the outside is achieved by the sealing element borne by the flange of the first pipe fitting element.