Features of threaded sealant

The threaded sealant is designed to make compounds of gas supply, heating or plumbing pipes as much as possible. When choosing a suitable option, it is worth considering all the features of threaded sealants, navigate among the entire variety of species, keep in mind both the grandfathers of sealing methods and the use of modern anaerobic gels.


Studeling overhaul, many think about the tightness of the pipes last time, and in vain. After all, it depends on how high the likelihood that everything can be spoiled by an unexpectedly niggy leakage. This is especially true when the pipes run near expensive technique: so damage the family budget will be more than tangible. However, many find the simplest solutions, using screwdriver threads: Padl, threads, plasticine. All this does not provide the desired isolation. And here it is time to pay special attention to professional threaded sealants.

Among professional materials, fum-ribbons, teflon threads and anaerobic gels are distinguished. On the latter it is worth staying in more detail. They are used in recent times more often than others, as they provide the optimal level of pipe clutch, fully sealing the thread. Properly applied anaerobic sealant is able to withstand the pressure of 50 atmospheres, not to mention the vibratory loads. In general, such a sealant is the best choice for domestic use, and on professional objects it will not work at all worse.

The main feature of the anaerobic gel is that it starts to glance only when the nut or connection is twisted and the access of air to sealant is blocked. As a result, the connection is obtained, one can say, monolithic, and almost no mechanical effort to break it. Only ultra-high temperatures that can be obtained only when using special tools (for example, a construction dryer). It is safe to say that the heating pipes are also possible to seal with a gel, and the durability of the junctions will be on height despite the temperature differences.

If you apply an anaerobic gel according to all the rules, it will last from 5 years and longer. If the technology was not complied with due measure, then the guaranteed service life will be only a year. However, even the annual warranty is more than you can count when using non-professional means and materials. Many make sure that the anaerobic binders are too expensive (the average price varies from 1,500 to 2,000 rubles per tube with a volume of 50 ml), however, the practice shows that such sealants cost their money, because repair in case it will cost much more expensive. In addition, the gel is economical, and it is possible that such a tube is enough to seal all plumbing and communication pipes in the apartment.

Thus, it is safe to say that anaerobic sealants are as popular with their own characteristics.


On the basis of the anaerobic sealants are divided into those composition of which is based on an oligomer, and based on acrylic group polymers. Both those and others possess similar qualities: withstand high pressure, are not subject to negative effects of mechanical loads and so on. The difference is important only for professional chemists, the construction sphere specialists for this parameter do not pay attention to.

It is much more important than the separation of sealants according to the degree of fixation. There are variants of strong fixation, medium (universal) and low.

Fixation of low degree apply when it is necessary to seal the pipe compound of a small diameter. The lock is poorly tolerates fluctuations and vibrations, and the pipe itself can be easily promoted using a girlfriend toolkit. This makes the use of a low fixing sealant with an excellent choice when you need to connect pipes only for a while, and in the near future they are planned to disassemble. You can use this type and for long-term use, but provided that in the process of operation on the threaded connection will not be significant loads.

Pastes and gels of medium fixation are used in everyday life. They are suitable for sealing heating systems, gas pipeline, water supply, and their use is absolutely harmless and does not change the quality of drinking water. That is why the sealants of this species are called universal. They further fix the threads, but it is possible to dismantle the junction in the future, only for this it will be necessary to use specialized equipment. The retainer maintains loads that produce batteries, water supply pipes and plumbing pipes.

Strong fixation in domestic conditions is not needed. Such sealants fasten the pipes forever and further dismantling is impossible. They, as a rule, are used in industrial production: factories, factories, during the arrangement of the city sewage network. These clamps are much more expensive than residents and require special knowledge and skills when working with them, because there will be quickly and unmistakably. The connection is incredible and in the future, if necessary, the junction will have to cut.

Frequently used medium fixation sealants are also classified. In this case, the classification category is the degree of viscosity of the drug. The smaller and more often the carving, the fat you should be a sealant so that it can optimally fill all the airspace joint. The limit diameter of the pipes for which anaerobic gels and pastes are produced is 4 cm. Large pipes are sealing in other ways.


The most important criterion for which you can immediately conclude that it uses the sealant and what properties it has, is color. Produce anaerobic threaded sealants of several colors.


As a rule, blue anaerobic sealants are suitable exclusively for metal pipes and parts. The junction turns out to be resistant to all sorts of influences, whether it is water, gas, antifreeze, gasoline and the like. Blue retainer is a high-quality seal that only recently began to use in living conditions. Previously, it was available only in industrial production, for example, in the construction of defense structures, missiles, spacecraft. Application is limited only by the diameter of the pipes: it should not exceed two centimeters. You can make dismantling without special equipment through an average mechanical effort.


Red sealants are needed in order to seal the worn, swing thread. Also, red sealants are used when sealing joints of ferrous metals. Red locks are grabbed faster than others, but it does not affect their strength properties. They are resistant to high pressure and temperature drops. The diameter of the pipes that can be sealing this anaerobic gel – no more than 3 cm. Disassembly necessarily require heating the place of the joint. When repairing, remove excess sealant with threads optional, you can apply a new layer right on top of them.


Green sealant refers to low-voltage varieties. It is suitable for temporary connection of pipes from both plastic and metal. When it dismantles it does not need to make an effort: it will be enough to promote the connection, as usual. Manufacturers claim that the difference between blue and green variants is small, but it is not. Blue is resistant to all sorts of exposure, vibrations, which can not be said about green. It is possible to use a green clamp when sealing pipes with a diameter of up to 3.81 cm (1.5 inches). An important point is that the thread should not be damaged.

Scope of application

Anaerobic sealants were invented in the fifties of the last century in the United States and were initially applied only in industrial regions. Later they came to the USSR, and with the decline of the industrial complex, the manufacturers of sealants tried to popularize their products, find her new use. So anaerobic gels and pastes moved to construction.

Initially, it was forbidden to use them when sealing water pipes, as it was believed that their contact with water poisoned her, and the water could not be drunk in the future. However, the studied studies have shown that the compounds used in anaerobic clamps are fully safe.

Currently, threaded sealants are used in several spheres.

  • Water supply. Using anaerobic gel, water pipes seal in apartments and houses. For insulation of pipes located on the street, they are not suitable due to the impossibility of sealing large diameters. Clamps are suitable for insulation of the joints of sewage pipes, since they are able to withstand high water pressure. Better to use blue sealants.
  • Plumbing. To the plumber water is supplied with pipes whose compound also needs to be done hermetic. To do this, use sealant, resistant to high temperature fluctuations. This is especially important, for example, when connecting a washing machine. It is necessary to pay attention to the fact that the retainer approached for sealing pipes from plastic.

  • Heating. As in the previous case, the sealant should withstand temperature fluctuations, as well as to be resistant to heating antifreeges and other chemical compounds. If the Soviet cast-iron radiators are insulated, it is necessary to use only red varieties of anaerobic gels, since other are not intended for working with ferrous metals.
  • Gas pipeline. Here, the tightness of the pipes is important, since gas leakage will lead to a damage of property through an explosion. You can lose life. You can not use green sealant, only blue. Red, too, is not desirable to apply, since if necessary, dismantling will not be possible. Sealing gas pipelines best trusted professionals to avoid possible errors.

Pros and cons

After reading the theoretical information regarding the anaerobic threaded sealants, you can draw up a list of their positive and negative traits. As the advantages are many times more than flaws, it should be started with the first.

The benefits are several.

  • High heat capacity of jigs. Sealant will not collapse even under the influence of strong temperature fluctuations. As a rule, the permissible level varies between -200 degrees and +300 degrees. All this allows the use of liquid anaerobic gels when connecting heating radiators or hot water taps.
  • Resistance and strength. The junction will not disintegrated, it will not split under the influence of mechanical loads or vibrations, so you can be calm about the fact that the pipe can give to flow due to the fact that the water was allowed through the pipes a little more intense.

  • Saving. In the long run, it turns out to save on repair and updating sealant on pipe connections. In addition, the composition itself is also economical. It will be needed literally a drop on the processing of the whole thread.
  • Chemical stability. This feature is one of those affected by the popularization of anaerobic sealants. Unlike sweater materials and some professional, gels and pastes with anaerobic properties easily carry the effect of chemical compounds and substances such as gasoline, antifreeze and similar.
  • Lack of water solubility. After passing the polymerization process, the sealant is not blurred by water, it does not dissolve in it, so it can be used to useless when the water pipes can be used, without fear that with time the sealant completely dissolves and the pipe will give to flow.

  • Universality. It is understood that the retainer can be used when working with various materials, including in cases where one item is made of one material, and the other is from another. So, the most frequent example is the compound of a plastic pipe with a metal.
  • Ability to withstand high pressure. Resistance to resist pressure should be taken out in a separate feature, because it is most often interested in buyers. The junctions treated with anaerobic sealant are able to withstand the pressure of 40-50 atmospheres.

In addition to the listed advantages, there are means and a number of flaws.

  • Correlation with temperatures. Temperature for frozen should be in the range between 15 and 25 degrees. In too cold premises, the polymerization time sealant will increase greatly, and its properties may change.
  • Diameter constraint. It is impossible to find an anaerobic gel that can be applied to pipes with a diameter of more than 4 cm so that it does not lose the lion’s share of its technical characteristics.

  • Dependence on surface purity. Before applying the retainer, the surface must be properly prepared: clean, degrease and dry. Otherwise, completely sealing the joint will not work.
  • Difficulty dismantling. Only green sealants of temporary action can be dismantled manually. For blue will need special equipment, such as a construction hairdryer. Red to dismantle it is impossible at all: the pipe will have to cut.

How to use?

It is worth mentioning in advance that anaerobic gels and pastes are produced in ready for use. Additionally prepare solutions and compositions do not have to. The container in which they are sold is designed to be applied to the drug directly from it, although you can use all sorts of brushes, if it is more convenient.

Order of work.

  • The surface is carefully cleaned. Any traces of rust, corrosion. If there are traces of an old sealant in the place of application, then it is completely optional to remove it: small particles will not affect the quality of sealing. If the pipe is new, then it is enough to walk on a carving of a metal brush to improve adhesive properties.
  • Degreased degreasing purified surface. For this, all sorts of compositions are suitable, for example, White Spirit. Degreasing need to be thoroughly not missing a single slick. It is important that the anaerobic gel is well grabbed. On plastic threads, you must apply a special activator.

  • Next prepared the composition itself. The tube is good. Only after that the packaging can be opened.
  • The sealant is applied to the place of the joint with a thick layer across the thread. Some masters advise to apply the composition only for several turns, because it is strong on the tightness of the joint it does not affect, but if you treat the pipe, which will continue to be under high pressure, it is better not to risk. For optimal seal, the sealant is applied not only from the outdoor side of the connection, but also with the internal: so you can achieve the optimal effect.
  • After applying the gel, you must tighten the connection. For this you do not need to make excessive efforts, just tighten manually. If the sealant spoke, it is harvested with a napkin. The composition does not freeze in air, so the sealant can be reused, applying to another compound.

  • Next joke is checked for tightness. For this, after 15-25 minutes, you need to create a small pressure of 10-15 atmospheres, putting water or gas. If everything is in order, it is necessary to wait for a complete hardening.
  • Full polymerization occurs per day. After this time, a re-test is performed, but the pressure must already be 40 atmospheres. If everything works properly, you can use pipes. If not, dismantling and re-sealing.

    • If you need to dismantle the junction, then the order of work will be such:
      1. The flow of hot air from the construction hairdryer is sent to the place of the joint;
      2. The moment will wait when the lock will turn into a crumb;
      3. The connection is disassembled using the key;
      4. The remains of anaerobic gel or pasta are removed with a cloth.

    Having done all the work correctly, you may not worry about the durability of the joint.


    What kind of manufacturer is better, you can argue for a long time, so the simplest thing is to appeal to reviews. Most positive estimates receive several brands.

    • Loctite. Universal glue from the Chinese manufacturer, however many users noted that the capped cap is required.
    • Sealup. Products from Italy features high quality and ease of work. There is a warranty seal, which is allocated as dignity, as it is possible to check how tightly the package is closed.
    • Abro. One of the few sealants that can be used at a negative temperature – up to -20 degrees.

    • Mannol. This option has one of the longest expirational terms, however it is impossible to work in a closed room due to a sharp smell.
    • Wurth. This German retainer is referred to as the highest quality. Despite the high cost, it is popular.
    • Tangit Uni Lock. Manufacturer from Belarus. Specialized gels are available for both plastic and metal.
    • Siseal. Anaerobic gels of this brand are often used. Sold in Tara at 100 g.

    Tips and recommendations

    Professional masters share a few recommendations, how to make the sealing of threaded connections the simplest and durable.

    • Do not be afraid that an unopened sealant will perform from the inside of the pipe. It will not freeze and during the operation of the water supply, it simply meshes water. Anaerobic gels are absolutely harmless, but still it is better to leave the crane open for a while so that the excess sealants are completely removed.
    • When wrapping compounds treated with a threaded sealant, you do not need to pull the threads with the keys. The maximum hand force will be quite enough, but it is really necessary to wrap in power.

    • If the trumpet is fragile, then you do not need to try to unwind the processed sealants of the joint. It is necessary to immediately use heating. There will be 170 degrees.
    • If possible, it is best to abandon the use of sealants for temporary installation. Disassembling connections will require a lot of time and forces that do not fully pay off. Best for temporary use resort to the use of sealants or flax threads.

    About the features of the threaded sealant, see the following video.

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