Connecting the toilet to the sewer is a simple process. If you want to save on the work of a locksmith, you can try to do it yourself. Fortunately, manufacturers of fittings for plumbing offer many adapter options. In order to conveniently and reliably perform articulation of elements arranged offset from one another, an eccentric is used.
What is a toilet clown
An eccentric (cuff) is an element of connecting fittings in the form of a pipe, the edges of which are made with an offset relative to the common axis. This design allows you to have some freedom when installing the toilet, if its outlet and the sewer hole do not match. Alignment is achieved by turning the cuff, worn on the pipe.
Eccentrics for the toilet are made of different lengths with a standard diameter of the connecting holes. Rubber cuffs have a corrugated surface in the places of connection to the nozzles. This provides a more reliable fastening. And the cuffs made of plastic are equipped with special rubber gaskets.
Eccentrics mainly connect pipes located in the same plane. But if the divergence angle is small, apply plastic cuffs, varying the corrugated part, in the region of which you can make a slight bend.
When it is convenient to use the cuff
In addition to using the cuff, there are other possibilities for connecting the toilet to the sewer, but there are cases when the eccentric for the toilet with a displacement is the only available option to make a joint. As a rule, this can happen only with two types of toilets: with horizontal and oblique discharge. The reasons for the mismatch of the axes may be as follows:
- Replacing the old toilet with a new one and the inability to pick up a model that is similar in geometric dimensions.
- Changing the floor level when shifting tiles, as a result - a difference in height in the outlet and entrance of the plumbing.
- The inability to maintain alignment with the initially shifted passage of the sewer riser in a multi-storey building.
- Miscalculations in the design of communications.
In all these cases, the use of an eccentric is relevant, provided that the displacement does not exceed five centimeters.
Eccentric for toilet: dimensions
Eccentric toilet couplings have a hole diameter of 100 mm. This allows you to directly insert them into the socket of the sewer pipe without additional adapters.
The length of the cuffs varies. The shortest rubber eccentrics are limited to 150 mm. Plastic cuffs can reach a size of 250 mm. It is impractical to produce longer couplings, since it is always possible to increase the branch pipe of the sewer pipe to the desired state using a plastic branch.
Other connecting adapters
Along with eccentrics, there are other elements of the connection:
- Plastic adapters, bends and nozzles. They are used mainly for coaxial articulation of valves, or at different angles of divergence of the nozzles. Using a different combination of taps, for example, two angles of 45 degrees, you can make a homemade eccentric for the toilet. It will be inferior to the factory model except in an aesthetic sense. For reliability and durability, this is the most practical option.

- Corrugations, corrugated cuffs. These compounds are used in difficult situations, with sharp divergences of the joint angles up to 90 degrees and above. Corrugation can bypass any interfering element. The lack of connection in its fragility. Thin walls in the bend area can break through, and sediment easily accumulates on the inner surface due to the ribs.
- Pipes are fan. These shaped bends are suitable for straight joints. They aesthetically benefit from the material from which they are made: earthenware, porcelain, piece china. With this product you need to work very carefully because of its fragility.
- Straight rubber or plastic cuffs.
Step-by-step installation of the toilet on the cam
For example, you can consider the option of installing a toilet in a newly renovated toilet, where the tiles on the floor and walls have been completely changed and there is only an outlet from the sewer pipe. In the source data - the presence of an axis offset between the connected elements.
The process is divided into several steps:
- Set the toilet in place of its constant position and outline the leg with a black marker directly on the floor tile. Mark out the mounting holes.
- Measure the distance between the nozzles, plus add 5 cm on each side to put on the eccentric for the toilet.
- They buy an eccentric of the required length and car sealant (it copes with sealing the seam better than silicone).
- They move the toilet to the side, insert the eccentric into the socket of the sewer pipe. They return the toilet to the place and, turning the eccentric in a circle, achieve the exact entry of the toilet outlet into it.
- A marker on the eccentric and bell of the sewer pipe makes a general notch to have a reference to the position of the element.
- The toilet bowl is removed, the sleeve is removed from the pipe, the mounting holes are drilled and plastic dowels are installed in them.
- A layer of sealant is applied along the inner circumference of the sewer pipe (at the place where the eccentric fits) and the sleeve is inserted, aligning the marks.
- Apply a layer of sealant to the drain outlet of the toilet bowl and install the latter in a constant place by inserting the eccentric for the toilet bowl 100 mm.

- Allow the sealant to stand for 30 minutes and check the drain by pouring a few buckets of water into the toilet. To control leakage, a sheet of white paper is placed under the cuff on the floor.
- If everything is successful and there is no leak, screw the toilet bowl with screws to the floor, wipe the marker line with alcohol.
It is important to consider that it is possible to obtain a reliable seam by applying sealant only on a dry surface.
Replacing the rubber cuff
During operation, eccentrics sometimes fail and begin to leak moisture. This can happen due to aging of the rubber and loss of its elasticity. To replace the cuff with a new one, work is carried out in the following order:
- Rinse the knee of the toilet bowl with several buckets of water, remove the remaining fluid in the knee.
- Using a metal saw, cut the cuff in half, unscrew the screws that attach the toilet legs to the floor and the pipe from the drain tank (after closing the tap). The toilet is cleaned to the side.
- Remove the remnants of the used cuff from the toilet and the pipe of the sewer pipe. Thoroughly remove the layer of old sealant and salt deposits formed during the operation of the sewer.
- Install a new eccentric for the toilet with an offset of 100 mm as described in the previous chapter of the article.
Cam repair without replacement
A malfunction of the connecting cuff can occur at a time when it is difficult to replace it or is not possible. To eliminate the leak and continue to use the bathroom painlessly, several methods are used:
- Sealing with fabric. Take a piece of dense cotton fabric and cut it into strips 5 cm wide. Pipes and an eccentric are well wiped from moisture, dust and dirt. Starting from the toilet pipe nozzle, a fabric is wound (by the type of insulation winding) over the entire area up to the sewer pipe nozzle, making a couple of turns on it. Fix the edges with insulating tape. The entire surface of the matter is stained with oil paint. The paint is allowed to dry.
- Repair with an elastic rubber bandage. Use the same winding principle, without subsequent painting.
- Putty automotive sealant. The method is used if the eccentric cuff for the toilet is leaking at the junction. The joint is cleaned and dried. The filled place is filled with sealant and allowed to dry for half an hour.
Conclusion
To make repairing or replacing the couplings with a toilet bowl more comfortable and not accompanied by an unpleasant smell from the sewage system, it is advisable to install an adapter with an integrated non-return valve on the side of the latter. Such a measure will also prevent sewage from entering the room from a common central in a multi-story building if a clogging of the riser occurs.