Plumbing sewer cuff. Rubber cuffs for sewer pipes

The principle of gravity flow implies the operation of the drainage system without pressure, but even in this case, leaks appear at the joints. Thanks to rubber sealing cuffs for sewer pipes the efficiency and durability of the drainage system increases, so not a single pipe connection can do without them. They are used in the outlet pipes of bidets and toilets, when installing drains from sinks, bathtubs and household appliances. The main purpose of the products is to create tight joints and prevent leaks. The service life of the seals is quite long, but if necessary, they are easily replaced.

Definition and purpose of a sewer cuff

Interpipe space seal

Various materials are used for manufacturing. Products in the form of corrugated pipes and rings are intended for use in production and residential buildings. Elastic polyurethane, silicone and rubber elements are used to seal joints of plastic pipes, fittings, various types adapters, giving them strength and eliminating leaks.

Parts are classified according to purpose:

• Rod ones have seat between the rod and the inner surface of the cylinder. Ensure tightness during forward and reciprocating movement of the rod.
• Pistons are used to prevent entry working environment into the gaps between the piston and hydraulic cylinder. The advantage of using them is maintaining the freedom of movement of moving elements.
• Universal ones can work in any conditions.

Depending on the type of connection, the cuffs can be sealing, ensuring reliable tightness, or transitional, allowing you to easily connect elements of different diameters.

Material of manufacture

Raw materials for the production of seals are selected depending on the operating conditions of the product and the corresponding physical and chemical properties substances. The material must meet the basic requirements: elasticity, strength, cost-effectiveness, ability to withstand temperature changes, long term services.

The conditions best met are rubber, from which various models of sealing cuffs and adapters are made. To give the material required properties Silicone, rubber and polyurethane are added to the rubber mixture. The resulting compound gives rubber products additional advantages:

• resistance to corrosive chemicals;
• strength;
• reliability;
• resistance to temperature changes and environmental pressure.

When carrying out external and internal sewerage Other types of seals are used from cast iron pipes. The connections are caulked using a rope, which is treated with resin, making sure that it does not get into the pipe and cause a blockage.

Types and sizes of cuffs

Plumber cuffs

Seals can be installed both internally and externally. In the first case, they are used to connect plastic pipes of different diameters or to connect washing machines and dishwashing units to the drainage system. If it is necessary to connect pipes without sockets, seals are mounted on top of the parts.

The transitional sewer collar provides a connection between cast iron outlets and plastic pipes. The length of the adapter with D 124/110 is 80 mm and is used to connect toilets, with D 72/50 – 110 mm for connecting other plumbing fixtures.

The dimensions of the sealing rings correspond to the diameters of standard pipes 32-100 mm, and the length can vary from 25 to 120 mm. Seals 50*40, 50*25, 50*32 are used when connecting washing machines, sinks, washbasins, showers, and dishwashers.

Installation features

There are two ways to install seals. The choice depends on the availability of a cast iron socket.

At good condition sewer pipes:

1. Using a chisel, clear the socket of caulking material and mortar.
2. Remove old item.
3. Prepare the expansion of the cast iron outlet, remove dirt and wipe with a rag.
4. Apply sealant to outside rubber seal and insert it into the socket.

Additionally, it is not necessary to apply silicone to the outside of the pipeline, since after drying it will form reliable connection elements.

Sealing cuff for external sewerage

In cases where it is not possible to remove old sewer pipes, they are cut off and the edge is made in the form of a cone to ensure easy installation. Since in multi-storey buildings The drainage system is usually active; it is better to choose the morning time for work, when most of the neighbors are at work.

Shut off hot and cold water in the basement to reduce the volume of waste. During preparatory work open sewer pipe plug with a rag to block access to gases and dirty water. The cut is cleaned of nicks so that in the future they do not cause the formation of garbage plugs.

If there is no bell, use the second method:

1. WITH inside Apply silicone to the fitting.
2. Pull the prepared rubber seal onto the cut end of the cast iron pipe.
3. Perform wiring from plastic pipes.

When installing installations, there are times when it is necessary to connect a pipe with a diameter of 90 mm or 95 mm to a conventional cast iron sewer with d 110 mm. In this case, use the Geberit adapter 367928. It fits perfectly into the cast iron socket, and on the other side allows you to connect plastic product custom size. To facilitate installation, liquid soap is applied to the parts. Automotive oil is sometimes used, but it may reduce performance characteristics rubber product, reducing its service life.

When connecting 95 mm and 100 mm pipes to a standard sewer, cuffs are used. They can be straight or eccentric. The cast iron pipe has a socket, so the connection will not be tight. In this case, cut a piece of pipe 5 cm long and coat it with liquid soap. Then the resulting ring is put on the product, which already fits tightly into the socket. A product with an eccentric allows you to save space in the bathroom; it is enough to turn it to the desired position, in which the mounting elements are deflected towards the drain pipe.

Advantages and disadvantages of cuffs for sewer pipes

Rubber cuff for transition from cast iron to plastic

Advantages of rubber products:

• good performance characteristics;
• long service life;
• low cost;
• application modern technologies during manufacturing, quality control at all stages of production;
• resistance to environmental pressure within 0.5 atm. up to 1.5 atm.;
• a wide range of;

In sewer cast iron sockets, exclusively rubber rings are used, which have high elasticity and strength. The seal prevents leaks, but the disadvantage of the part is that it is demanding on the condition of the cast iron sockets. Even with minor chips, the tightness is broken.

The cost of the products is low, for example, an Ostendorf 110 mm sealing collar can be purchased for 175 rubles, a product with d 50 mm, double-leaf reinforced - for 5 rubles. A three-leaf adapter with dimensions 25*50.32*50, 40*50, 50*73, 110*123 will cost from 9 to 51 rubles.

Fire cuff REHAU RAUPIANO compact 75 Germany made of polypropylene costs 3,457 rubles.

Rubber cuffs for sewerage can be made from different materials, also exist Various types devices. Hydraulic seals are used in industry, for equipping sewage systems in private houses, cottages and apartments.

Cuffs for cast iron sewer are made from polyurethane and rubber compounds such as rubber, paronite, silicone and rubber. In production, only 100% rubber is used, no polymer is mixed. Thanks to this composition, high elasticity, strength and tightness of fastening with the connected parts are ensured. Polymer and rubber also provide resistance to increases and decreases in temperature, are resistant to aggressive substances, and can be used when exposed to acids and with increased rigidity of working resources.

The sealing cuff for sewerage also comes in different types:

• rod;
• piston;
• universal (for rods and pistons).

Also, the rubber sealing cuff for sewerage can be internal or external. The internal seal is used in cast iron pipes to connect plastic pipes with different diameters. Also used to connect a corrugated hose to the drain of household plumbing fixtures (for example, connecting to the sewage system of a washing machine or dishwasher). The external seal, in turn, is used to connect to a socketless sewer structure.

There is also a three-leaf transitional sewer cuff, which facilitates the transition from a cast iron pipeline to a plastic one.

In domestic sewer pipelines, wastewater is transported in most cases by gravity, that is, there is no increased pressure in the system. But even in such conditions, leaks cannot be avoided without proper sealing of the joints. Rubber cuffs are used to seal the joints of pipes, fittings and pipes of plumbing fixtures, reliably protecting the joints from leaks. What are they? sealing rubber bands What they are and how they are used in practice, you will find out by reading the article.

For sealing to be effective, cuffs must have the following properties:

• elasticity;
• elasticity;
• ability to withstand temperature changes within certain limits;
• strength and long service life.

Rubber products fully possess these properties, therefore sealing couplings and cuffs for sewage pipes and transitional shaped elements are made of varieties of this material, such as:

• the actual rubber;
• paronitis;
• rubber;
• silicone

Sometimes manufacturers add polymer substances to the rubber composition, which makes sealing rubber bands for sewer pipes more rigid and less convenient for use. installation work, but at the same time wear-resistant and durable.

Some types of cuffs, for example those that are equipped with adapter couplings for connecting the toilet flush to the sewer pipe, are made of polyethylene. In conditions large diameter Connected holes (at least 110 mm) are often of irregular geometry, this material demonstrates better tightness and wear resistance (rubber cuffs have to be replaced with similar ones after dismantling).

Types and sizes of cuffs

Sealing elements for sewer pipes can be divided into two categories:

• sealing;
• transitional.

The first ones are used for joining sections of sewer pipeline of the same diameter. According to the method of application, such cuffs are:

• external;
• internal.

The only difference between them is the nature of the installation. Before joining, the outer sealing rubber bands are put on top of the joining pipe, the inner ones are placed in a special socket of the socket (joining expansion). Typically, a plastic sewer pipe on sale comes with an installed internal rubber seal. The cuffs are supplied separately to the shaped elements (corners, crosses, revisions).

Transition sleeves will be needed if you need to hermetically join pipes of different diameters or made various materials(plastic/cast iron). For example, the most popular “adapters” are cuffs 50/40, 50/25, 50/32, without which high-quality joining of flexible corrugated pipes for drains of washing machines and dishwashers, shower cabins and bathtubs, sinks with PVC pipe with a diameter of 50 mm. Such seals are made in the form of an irregular truncated cone. With the wide end they are inserted into a 50 mm plastic pipe. At the narrowed end there is a hole made for the appropriate size of the tip of the drain corrugation.

Less often it is necessary to lead a flexible corrugated hose coming from the sewer siphon of plumbing fixtures directly into the cast iron socket. Here, rubber transition seals are used that have a widened end 72 (for cast iron) and a hole for inserting a corrugation tip of 25,32 and 40 mm. Cuffs measuring 72 by 50 and 124 by 110 will help securely connect the cast iron to the PVC sewer pipe.

Installation features

There are no problems with the installation of transition collars connecting corrugations and 50 mm plastic pipelines. The elastic is easily inserted into the socket and tip flexible pipes fits easily into the hole. You will have to work a little when installing the “reducer” in cast iron. You will need to start cleaning the bell from old sealant and other blockages.

Joining sections of a 50 mm sewer pipeline where internal sealing collars are used is also easy. The end of the pipe, if it is not cut, fits into the socket with a pre-installed seal without unnecessary effort. If a fragment of the pipeline is cut, using a handy abrasive (file, emery wheel) a conical edge is made at the cut end (similar to the factory one). To facilitate the connection of 50 mm pipes, ordinary water is suitable as a lubricant.

Pipes with a diameter of 110 mm are more difficult to connect and water will not help here. In this case, a special plumbing lubricant is used. Home craftsmen use improvised automotive oils to reduce friction, although this can negatively affect the durability of the rubber seal.

Important! Some motor and transmission oils can corrode the rubber used to make the sealing and transition collars, so it is not recommended to use these lubricants when joining sewer pipes. If there is no special lubricant, you can use Vaseline or glycerin.

Thanks to the availability of a full set of sealing and transition collars on the shelves of construction specialty stores, the hermetically sealed assembly of the sewer pipeline, as well as the connection of plumbing fixtures to it, does not present any particular difficulties. There are cuffs different sizes and purpose, so joining any sections of a sewer pipe or toilet coupling is not a problem now.

Cuffs for sewer pipes are parts that ensure the tightness of the connection (flexible - much more reliable than traditional caulking with a cement lock device). They are cylindrical (less commonly, ellipsoidal and other shapes) products with thick walls, made of rubber, PVC, polyurethane, silicone, paronite. Cuffs are used mainly for joining cast iron and plastic pipes, connecting plumbing equipment to the sewer network (ready-made fittings for modern systems are sold already complete with O-rings).

Dimensions of cuffs for sewer pipes

There is a whole range of sizes for sealing cuffs: 32–100 mm in diameter, 25–120 mm in height. The size is indicated in two numbers: the first indicates the external diameter, the second - the internal. The difference is the wall thickness. For example, a cuff is 110x120, where 110 is the internal diameter, 120 is the external diameter, wall thickness is 10 mm. You need to find out the height (for some reason they don’t indicate it, at least in online stores).

Standard sizes parts for the transition from cast iron to plastic

When connecting the elements, physical effort is applied - the pipe enters the rubber ring with difficulty, however, it is recommended to use silicone sealant.

Practice using cuffs

Using cuffs, plumbing equipment (sinks, sinks, bathtubs, toilets, etc.) is connected to the sewer network and household appliances(washing, dishwashers), connect sewer pipes. Plastic is connected to plastic using special fittings equipped with rubber sealing rings, and cast iron is connected to plastic using either adapters, couplings, or just cuffs.

For joining cast iron and plastic pipe Both external and internal cuffs are used (for socket-shaped and socketless designs). They work in stages:

• clean the connecting part of the cast iron pipe - it must be absolutely clean to ensure proper adhesion of the sealant;
• apply sealant to the cuff and insert it into the socket;
• A plastic pipe is inserted into the cuff.

If pipes have to be cut, this must be done correctly - the cut must be smooth (no nicks, even if they seem microscopic and are difficult to detect). After cutting, the part is chamfered.

In terms of the procedure for joining smooth pipes, it is not much different from socket pipes - the sealant must be applied to the collar on both sides, since the coupling is placed on top of it.

Scheme for installing a cuff on a sewer pipe (connection of smooth pipes)

Siphon connection

For this purpose, the use of a sealing collar is mandatory (there is always water in the siphon - it serves as a kind of seal). There are no difficulties in connecting the siphon - you can easily do it yourself without knowing special knowledge. First, the siphon itself is assembled according to the instructions (the accompanying documentation must be available, otherwise you should not buy the equipment: the configuration is different, and the assembly instructions vary accordingly). Then connect the pipe:

• to the siphon;
• to the sewer (simply inserted into the fitting hole intended for this purpose).

If the fitting on the riser is equipped with an O-ring, the collar is used only to connect the pipe to the siphon.

What types of cuffs are there for sewer pipes?

This is predominantly a round wide o-ring, sometimes with a corrugated part. The cuffs are internal and external. Internal ones are used to connect socket structures, external ones - for smooth pipes (in addition to the seal, a coupling is installed).

Sealing cuffs with corrugated part

Cuffs are most often made of rubber - an elastic material that fits tightly, providing a reliable flexible connection. The shape of a part depends on its function.

The eccentric cuff consists of pipes connected to each other with an offset, that is, the centers of both parts are in different planes. Traditionally, the part is called a cuff, but this is a special shaped part for connecting to the toilet network. It is equipped with O-rings and does not require the use of sealant (with the exception of connection to an old cast-iron riser, when sealant is used for greater reliability, given the difference in materials).

Unfortunately, due to too much displacement of the connected elements, it is not always possible to use the eccentric cuff (although some craftsmen manage to insert one into the other, building a strange structure) - in such cases, the toilet is connected using a corrugation.

There are details different configurations, but sometimes such a displacement is required that connection with their help is impossible - in such cases a corrugation is installed.

Pleated cuff

The corrugation is similar to an eccentric cuff, but the implementation of the displacement is different - it is achieved through a flexible corrugated sleeve, and not by positioning the parts relative to each other. Thus, the displacement can be large, but it is necessary to set the desired bending angle of the corrugated part so that the drains flow freely (otherwise blockages are inevitable).

Connection via corrugation

The main advantage of corrugation is flexibility. Thanks to this property of the part, it is almost always possible to connect a toilet to the sewer without errors. The main disadvantage is the short service life. Due to the same flexibility, the walls quickly wear out and the part becomes unusable. When choosing corrugation, you need to give preference to thick-walled, reinforced.

Installation is theoretically simple (the parts are simply inserted into each other according to the attached instructions), but we do not recommend installing them yourself (unless you have the skills): the cuff functions normally under certain conditions (bending angle, slope, stretch length), and if they are not created, the system will not work will be disrupted (which can lead to floods due to blockages).

Attention! Corrugated connections, with their flexibility and extensibility, create the temptation to move the toilet to some other, more convenient corner, despite the fact that the riser, whatever one may say, remains in its place. A citizen not burdened with plumbing knowledge thinks that with the help of these accordions he can easily screw his white friend to the sewer. It can be transferred. And you can connect. But all this will not work if there is not a sufficient slope (gravity sewer networks laid at a certain slope; pressure arranged cistern, sufficient only for a toilet connected directly to the riser - without meter-long trunks).

So you won’t be able to read a newspaper/memoir while sitting on the toilet, looking out of the window from time to time - or you’ll have to erect a plumbing miracle on a pedestal and screw a ladder to it (here it’s not far from the attic window).

On a pedestal

There is a solution to this problem too - installation pumping system, forcibly sending wastewater into the sewer. However, such drastic changes will require permission for redevelopment, and this is:

• development of a project (yes, just to move the toilet a few meters);
• payment for the project;
• its approval by the authorities and everything related to it;
• payment of the approval fee;
• the commission accepting the transfer of equipment (they look at how far they have moved away from the project, if they have moved away);
• payment of commission fees.

Everything is easy in the text - the text cannot convey the effort made. However, we all know what is transported by sewer pipes (that is, what will flood an apartment/house when improperly installed cuffs cause a flood), and therefore, when it comes to sewerage, we strongly recommend that you contact specialists, even those with restless hands. Especially when it comes to cast iron risers: cast iron is fragile and must be handled with extreme care.