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The wall bushing seals pipes at feed-through points, e.g. through concrete or brickwork. It consists of a 30 mm thick rubber disc with two stainless steel plates and screw fittings. It has 4 or 6 holes for suction or pressure hoses and electrical cables.

The wall bushing is for example, inserted into a core hole of 100 mm or 110 mm, the pipes are pulled in and then the steel plates are pressed together with the enclosed screws, the rubber in between expands to all sides. This creates a permanent watertight seal between the penetration points and also the outer annular space is permanently sealed.
When passing through brickwork, we recommend mortaring a sewage pipe into the wall opening. In this case, the wall bushing is then inserted into the pipe.

The designations WD 100 and WD 110 refer to the outer diameter of the wall bushing. When using a pipe with 110 mm or 100 mm inner Diameter the wall bushing will fit exactly into the pipe.

The wall bushings are not suitable for permanent underwater use.

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