Ranking of the best thread sealants for 2022

Threaded connections on pipes have a wide range of applications in domestic and industrial sectors. Whenever the installation of tees, couplings, muffling, regulating and locking devices, the important question arises of ensuring the tightness of the thread.

Why sealants are needed

Modern, versatile and technologically advanced materials are special anaerobic compounds that polymerize in cracks and gaps in the absence of air. They are designed to fix and seal pipe threads.

To seal drainage and water supply systems, paste is often used. They are divided into 3 types:

1. Non-hardening - the appearance is similar to a thick paste, the composition contains resins and polymers. It is the density that gives strength and sealing after being applied to the thread and screwing in the adjacent element. The parts are resistant to high temperatures and strong vibration from the water flow that occurs during the opening of the tap. But they cannot be used if there is high pressure in the system. Uncured paste under pressure will be squeezed out of the joint.
2. Hardening - the base consists of a solvent. Excellent properties give a guarantee of the correct fastening of the structure and the reliability of sealing water pipes. Before starting the system, you need to wait 2-3 hours for the paste to dry completely. The drying process must be increased if the work is carried out at low temperatures. Pastes that tend to harden are ideal for sealing high pressure plumbing systems. The only significant drawback is that shrinkage occurs after drying.When the paste finally hardens, it is very difficult to dismantle the connection. If, it turns out, to disconnect the thread, the old layer is subjected to grinding, and then a fresh layer is applied.
3. Anaerobic - the latest subspecies of sealant containing an acrylic polymer, which is in excellent demand among plumbers. In contact with the metal, the process of polymerization by active substances starts. As a result, a polymer is formed, similar to a cross-linked structure. Having numerous pluses and advantages, they are not subject to corrosion and destruction by chemical impurities and substances in running water, and withstand critical temperatures (from -90 to +200).

The difference between red, blue and green sealant

To accurately distinguish between the characteristic properties, as well as the scope of fixing materials, manufacturers have come up with colored compounds in blue, red and green.

Blue

The material of a blue tint allows its use for metal pipes. The stability is at a high enough level, so the connection is very simple. It has recently begun to be used in domestic conditions, although it was previously used only for industrial purposes: the aviation and defense industries, aviation and space-related industries. However, pipes should be no more than 20 mm in diameter, and when dismantling, it does not matter if there is a special one. tools.

Red

The material in a red tint is used to seal worn-out obsolete threads and metal pipes made of black metal alloy. The joint quality does not suffer at all, despite the reduced setting time. He is not afraid of temperature fluctuations and high blood pressure. It is possible to use with pipes not exceeding 30 mm in diameter.To dismantle the joints, a heated tool is required. During repair work, the remaining material does not have to be removed. It is allowed to apply a new layer on top of the old one.

Green

It has the lowest specificity of the connection, as a result of which it is a temporary fastening of metal and plastic. When dismantling, special efforts are not required, it is performed by twisting. There are no excellent characteristics that speak of resistance to vibration and high pressure. The maximum value of the allowable size of the connecting pipes is 3.81 cm, provided that the thread is intact.

Automotive

Automotive seals have long outgrown conventional repair tools. Currently, such sealants are used for many works that are performed when assembling a car at the factory. Often, with the help of such a mass, they enhance the fit of automotive gaskets, and sometimes they even use it instead of a gasket. Now it is very difficult to imagine the repair of any auto-moto equipment without the use of sealants.

The main thing, before using, is to make sure that it is of high quality workmanship. Otherwise, you may stumble upon material that will not hold oil or other liquid. If this happens, then the work will have to be done again. Therefore, it is important to use only high-quality masses that are produced by trusted companies.

How to choose

If it is necessary to seal a threaded connection, it is better to use an anaerobic sealant. When using such a material, it is necessary to fulfill a number of conditions for the best sealing.

Connection assembly time

The time required for a quality assembly of a threaded connection is affected by the material of the thread and the coating to which the mass must be applied. Materials differ in their tendency to polymerize.With active metals, such as copper or aluminum, the sealant contacts quickly, and the connection is obtained with high quality in a short period of time. With chrome parts and composites, the seal contacts a little worse. To galvanized and painted surfaces, as well as to titanium and stainless steel, it adheres worst of all.

When joining two weakly contacting materials, forced heating is necessary for a reliable connection. If the bond occurs between an active metal with a less active one, then the paste hardening time will be the same as that of the less active material. For standard plumbing sealants and some automotive sealants, the full sealing time is indicated on the product packaging.

Necessary sealing conditions

Sealants vary in temperature conditions in which they can be used. There are seals that can be used at high temperatures. Others, on the contrary, are quite possible to use in cold conditions.
The special chemical formula of some types of sealants allows them to be used in adverse environments, high acidity or strong oxidizing agents. Anaerobic materials are used to work in heating systems, with vapors of gasoline and diesel fuel.

Packing form

The shape of the package plays an important role in applying the paste to the surface. For a variety of purposes, both wide-necked packaging and, conversely, narrow-necked packaging are used. The sealant, which is in a container with a wide outlet, is convenient for applying the composition to threaded connections. Such a hole allows you to completely envelop the threaded surface, filling all the necessary grooves.

Some types of sealants are placed in a special container, which is exited with a pistol.The device allows you to use the material more economically by adjusting the thickness of the exit of the composition from the cylinder. The gel-like material does not spread over the joint surface, which also allows the operation to be carried out with the greatest economy. For high-quality and expensive types of sealant, the composition is more viscous and dense.

Best Anaerobic Sealants

What is the best material to deal with? Let us turn to the study and rating review of the most popular domestic and foreign materials intended for pipe sealing.

Loctite 574

At a time when car manufacturers decided to combine the upper beds of the camshafts and the valve cover into one whole part, automobile mechanics began to speak very unflatteringly about them. The fact is that it is simply impossible to seal such a connection with a conventional gasket. The gap between these two planes should be no more than microscopic. Only an anaerobic composition can cope with such a task.

Loctite 574 is widely used by car manufacturers. He is considered to be the best of the best. But how could it be otherwise when the price for a small bottle of the mixture is more than 2,000 rubles? This material retains the ability to polymerize in gaps up to 0.5 millimeters, but only after 24 hours. Joints after treatment with this mixture become suitable for work almost immediately. Naturally, only under slight pressure.

There is no need to say anything negative about the durability of Loctite. Even engine oil at 125 degrees cannot affect its strength, no matter how long it is exposed to it. In addition, Loctite is resistant to automotive fluids such as gasoline and antifreeze.Of course, they are capable of affecting its strength, but only slightly.

• excellent operational properties;
• long service life;
• ability to work in large gaps.

• high price tag.

The cost of Loctite sealant does not allow us to call it the best of the best sealants. It may well be replaced by an analogue that will have similar properties and cost much less.

Permatex 51813

Permatex is one of the most popular analogues of Loctite anaerobic compactor. Perhaps, it became popular, first of all, due to its price - it is three times lower than the cost of the first. Interestingly, from 1972 to 1999 Permatex was owned by Loctite.

The sealant was developed for joining parts made of aluminum, but it works just as well with steel and cast iron elements. The limiting gap is 0.4 mm, and the performance of the mixture is maintained even when heated to 150 degrees. He is not afraid of liquids such as engine oil, gasoline and antifreeze.

The obvious difference of this sealant is the long polymerization time. It seizes more slowly, so it will take a little longer to withstand it. But this problem is solvable. Permatex has an activator on sale that allows you to reduce the polymerization time. Even with the purchase of a sealant and an activator, the cost of Permatex remains significantly lower than Loctite.

• reliable connection of parts;
• the ability to use for sealing large gaps;
• durability.

• long polymerization time.

Efele 133

The composition is of high quality, medium strength and high viscosity.Most often used for sealing pipe threaded connections, the size of which does not exceed 3 ''. The composition can be used to fix pipe connections with threads up to M80 and with a gap not exceeding 0.5 mm. Efele 133 is resistant to continuous vibration, shows high performance under high pressure, can be used as a replacement for tape, winding, spring washer and similar mechanical fixing devices.

The material will not cause corrosion, is able to hold onto vertical surfaces, and will help prevent self-unscrewing and the ingress of water or aggressive compounds. At the same time, it is very easy to use. It copes well with temperatures from -60 to +150 degrees.

• The optimum ratio of price and quality.

• not detected.

Loctite 577

It is used for sealing pipes and fittings made of metal, as well as for other types of threaded connections.

Sealing occurs instantly. At the same time, the composition does not crumble and does not shift, and also shows high resistance to chemicals and high temperatures.

The composition hardens quite quickly and keeps well in the gaps. However, this cannot be called an absolute plus. Due to the rapid solidification, the ability to adjust the part is lost. In addition, its cost is quite high.

• fast sealing;
• freezes quickly.

• price.

Loxeal 55-03

The composition is one-component and is used to seal bolts and nuts that need periodic dismantling. After use, the connection can be disassembled using conventional tools.

• stably reacts to elevated temperatures, corrosion, continuous vibration, exposure to liquid, gas, oil.

• not detected.

QuickSEAL 710

This anaerobic sealant is used for installation of gas supply, heating and water supply systems. It is designed to work with hydraulic systems and threaded parts made of metal.

One of the most important advantages is the presence of an anaerobic base. The principle of operation of such a composition lies in the ability to displace oxygen accumulations from compounds and fill all gaps, crevices and cavities.

But this is far from the only advantage of the QuickSEAL 710. It can be dismantled very quickly if the need arises. It has an easily collapsible degree of fixation of parts and can be used, if necessary, to seal joints on the following bases:

• brass;
• steel;
• zinc;
• cast iron;
• metal-plastic;
• chrome plated;
• galvanic.

The QuickSPACER ® 710 complies with the existing world standard. This allows you to use it during work with gas, water, compressed air and gasoline.

• after use, you can easily disassemble the part;
• strong;
• adheres to many surfaces.

• not detected.

Quickspaser 716

The composition has an average level of fixation. It is designed to perform such work as sealing and connecting threaded parts, and is resistant to vibration and linear expansion. It retains all its properties at a temperature that ranges from -50-150 degrees.This kind of sealants are widely used in cases where it is necessary to seal joints when laying a gas pipeline, water pipeline and compressed air pipeline.

• resistant to vibration and linear expansion.

• not detected.

Seal Up

SealUp - proved to be excellent in work. It can be used for joints, joints and couplings in air conditioner installations and is able to create a film on the threads that is resistant to chemicals. Excellent for working with metal and plastic parts, withstands strong vibration and works at temperatures of -90-200 degrees.

• the composition retains elasticity;
• excellent adhesion to the surface;
• able to fill any microscopic cracks.

• not detected.

Schrauben Sicherung mittelfest

It is used in cases where it is necessary to prevent self-unscrewing of fasteners, which can occur due to high loads or strong vibration. In addition, it can be used when it is necessary to seal threads or small gaps to prevent corrosion. The bottle is only half filled.

• prevents corrosion;
• strong composition.

• not detected.

The Best Winding Sealants

Threads Matrix

Thread sealant of a new generation of polymer type, used as a sealant for all types of threaded connections on pipes consisting of metal, plastic, designed for systems supplying hot, cold water for various needs, as well as drinking and technical water, necessary for heating and gas supply .
The sealant is wear-resistant, heat-resistant and resistant to aggressive media.

• has water pressure resistance up to 16 bar and gas pressure up to 8 bar;
• quite hygienic, does not have the ability to decompose, prevents corrosive development;
• instant sealing of a thread with a high-quality connecting property in the shortest possible time.

• not detected.

Henkel Tangit Uni-Lock

It is intended for sealing pipes in connecting places on cold and hot water supply, for drinking water, heating and gas. Pipe joints can be adjusted already after 72 hours from the time of assembly. Used to complement elements, plastic and metal pipes.

The appearance of the product looks ready for sealing fibers including multifilament threads. The contents of the container can be directly wrapped around threaded pipes. The winding process is carried out to the right place in the direction of the turns and starts from the end of the pipe.

• connections assembled on such a thread can be easily adjusted;
• very easy and simple to apply;

• not detected.

MasterProf MR-UIS. 13 0199

In order to seal threaded connections, sanitary thread from flax 55 m, 40 g is widely used. Excellent for assembling and twisting heating and plumbing systems.

• excellent sealing;
• durable;
• quality.

• not detected.

Tape FUM Valtec

The composition of such a tape contains a fluoroplastic sealing material, which is excellent for sealing joints on the threads of pipelines through which gas and liquids are transported, non-aggressive to Teflon. The exception is oxygen substances. Vaseline oil creates a film coating. There is a possibility of application at a temperature from - 20 to + 200 degrees. It does not require the use of additional sealants.

FUM thread sealing tape is very simple and easy to use. Suitable for use in place of mastic and aerobic sealants for reinforcing pipe threads of any material.

• very simple and easy to use;
• suitable for use in place of mastic and aerobic sealants.

• not detected.

The best car retainers

Permatex 59214

The heat-resistant medium hold agent thickens and fixes the threads. Leak proof and leak resistant. Changes are allowed during the day. The substance under consideration can seal turns, plugs, and other connecting parts on the thread. The presence of Teflon serves as an obstacle to mashing. Its flow into the system itself is excluded. Quietly withstands pressure up to 700 atmospheres and temperatures up to + 205 degrees.

• heat-resistant agent;
• withstands high pressure and temperature conditions.

• not detected.

Permatex High Temperature Threadlocker

A heat-resistant, strong-hold adhesive designed for threads is an improved replacement for lock washers. It copes remarkably well with gluing metal surfaces, in case of cessation of oxygen supply after the assembly process.

Scope - locking and prevention of loosening during vibration, not subject to corrosion, good fastening of thermal and highly loaded connecting threads. Operating temperatures are in the range from -54 to + 232C°.

• withstands high temperatures;
• the cost of the material corresponds to its quality.

• not detected.

ABRO TL-342 THREADLOCK

Functional fastener for fasteners larger than 6mm.
Provides sealing for fittings, valve cover bolts and bottom bolts in any place where there is a need to replace spring split or groove washers.

• the possibility of creating a high-strength elastic material that will not lose its advantages over time;
• gives vibration resistance when sealing joints;
• the fixative is resistant to most chemicals;
• can be easily removed using a hand tool;
• capable of quick drying in 20-30 minutes on metal surfaces;
• hardens completely in 24 hours;
• has medium strength.

• not detected.

The best hardening fixatives

LMG MG-414

With the help of a threaded connecting lock, the option of spontaneous loosening at the place of twisting is removed. It replaces the properties of mechanical fixing methods (lock washers), retaining rings and cotter pins.The advantages are an increase in the strength of the connection, thread oxidation is prevented, there is no need for additional tightening of the bolts after installation. It is characterized by resistance to vibrations, shock loads and thermal expansion. Vysokoustoychiv to any kinds of technical liquids.

• replaces the properties of mechanical methods of fixation;
• vibration resistant.

• not detected.

Mannol 9927

Used on connections with a strong load. Prevents loosening and self-loosening, replaces mechanical fixation methods.

• perfect sealing;
• affordable cost.

• not detected.

AVS AVK-133

It gives the possibility of fixing and sealing non-separable structures subject to loosening, including shafts - bushings, bearings without a press fit. The substance polymerizes in gaps up to 0.4 mm in the absence of air, ensures reliability and will not allow corrosion to occur. Fairly resistant to fuel, water, gas and machine oil.

• the possibility of fixing and sealing non-separable structures;
• affordable price tag.

• not detected.

The best plastic sealants

LOCTITE VR 5921

A viscous paste-like mass of red-brown color, emitting a characteristic alcohol smell. When the solvent evaporates, a very strong and elastic bond is formed. Suitable for fittings, assemblies and flanges.
A product of the highest quality that has earned positive reviews and the approval of specialists. It is distinguished by complete safety, good efficiency during interaction with different surfaces, long shelf life, does not lose its initial properties.

• strong and elastic connection;
• top quality product.

• not detected.

IMG MG-414

One of the best threadlockers used in the automotive, construction and plumbing industries. Increases the strength of the entire connection. The thread does not oxidize, and the product becomes resistant to various vibrations. Used at temperatures up to 150 degrees.

The average cost is 180 rubles.

• Reliability;
• Quality connection;
• Strength characteristics.

• Not detected.

To date, in modern, domestic and foreign industry, there is a huge variety of similar compositions available to help prevent pipes from leaking in connecting places. Conscientious manufacturers offer materials that are similar in characteristics and performance properties.