House lead=in for electric current and communication cable - has inner tube driven in outer tube in building wall to spread out outer tube so that it is anchored in hole bored in wall and cable is fixed and sealed from one side of wall

摘要

The lead-in has a sealing plate (3) with plastic sealing material (5) pressed against a building wall and in a bore to seal it to water and gas. A thrust nut (4) screwed on to the outer tube (2) presses the sealing material against the wall. The outer tube is provided with a standard thread, so that a shrinkage sleeve is protected during heating against sliding. Further components such as extension pipes, screw fittings and sleeves can be screwed on to the outer tube. ADVANTAGE - Sealing of cable can be carried out independent of type of wall. Mortar or liquid not required for sealing. Lead-in is water and gas tight.