Seal plug ECON M40 1040-40. Seal plug with ECON technology, designed for sealing all common electrical installation pipes in junction boxes or at cable outlets. The long sealing neck with three sealing lips and varying widths adapts to the respective installation pipe and ensures an airtight and smoke-tight seal, even with angled cut pipes. From pipe size M25 onwards, the membrane surfaces are divided by separating ribs. These ensure secure cable routing and prevent damage and cable pinching. Installation type: GEG airtight. Installation type: fire protection. Application area: sealing of electrical installation pipes 1040-40.