Rating of the best thread sealants for 2024

Pipe fittings have a wide range of uses in the domestic and industrial sectors. Whenever tees, couplings, plugs, regulating and shut-off devices are installed, the important question of ensuring the thread tightness arises.

Why do you need sealants

Modern, versatile and technological materials are special anaerobic compounds that polymerize in crevices and gaps in the absence of air. They are designed to hold and seal pipe threads.

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

1. Not solidifying - the appearance is similar to a thick paste, the composition contains resins and polymers. It is the density that gives strength and sealing after applying to the threads and screwing in the adjacent element. The parts are resistant to high temperatures and strong vibration from the water flow that occurs when opening the tap. But they cannot be used if there is high pressure in the system. Uncured paste will be squeezed out of the joint under pressure.
2. Solidifying - the base consists of a solvent. Excellent properties give a guarantee of correct fastening of the structure and reliable sealing of water pipes. Before starting the system, you need to wait 2 - 3 hours for the paste to completely dry. The drying process should be increased if the work is carried out at low temperatures. Pastes that harden are ideal for sealing high pressure plumbing systems. The only significant drawback is that shrinkage occurs after drying. When the paste hardens completely, it is very difficult to dismantle the connection. If, it turns out, to separate the threads, the old layer is subjected to grinding, and then a fresh layer is applied.
3. Anaerobic is a newer subtype of acrylic polymer sealant that is highly sought after by plumbers. In contact with the metal, the process of polymerization with active substances starts. The result is a polymer similar to a crosslinked structure. Having numerous advantages and advantages, they are not subject to corrosion and destruction by chemical impurities and substances in running water, and can withstand critical temperatures (from -90 to +200).

Difference of red, blue and green sealant

To precisely differentiate the characteristic properties as well as the area of ​​application of the fixing materials, manufacturers have come up with colored compounds in blue, red and green.

Blue

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

Red

The material in red shade is used to seal abraded obsolete threads and black metal alloy metal pipes. The joint quality does not suffer at all, despite the reduced adhesion in 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 heating tool is required. During repair work, the remaining material does not need to be removed. It is allowed to apply a new layer over 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, no special efforts are required, it is performed by twisting. There are no excellent characteristics indicating resistance to vibration and high pressure. The maximum value of the permissible 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 a factory. Often with the help of such a mass, the adhesion of car gaskets is strengthened, and sometimes it is even used 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 is to make sure that it is of high-quality workmanship before using it. 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 the threaded joint, it is better to use an anaerobic sealant. When using this material, a number of conditions must be met for the best seal.

Connection assembly time

The time required for a high-quality assembly of a threaded connection is influenced 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 a high-quality connection is obtained in a short period of time. The seal contacts chrome parts and composites a little worse. It adheres the worst to galvanized and painted surfaces, as well as to titanium and stainless steel.

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

Required 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 an unfavorable environment, high acidity or with strong oxidants.Anaerobic materials are used to work in heating systems with gasoline and diesel vapors.

Packaging form

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

Some types of seals are placed in a special cylinder, which is exited with a pistol. The device allows more economical use of the material by adjusting the thickness of the composition outlet from the container. The gel-like material does not flow over the surface to be joined, which also allows for the most economical operation. High-quality and expensive types of sealant have a more viscous and dense composition.

Best Anaerobic Sealants

What kind of material is it preferable to deal with? Let's 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 camshaft beds and the valve cover into one piece, automotive mechanics began to speak of them extremely unflattering. 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 its ability to polymerize in gaps of up to 0.5 millimeters, but only after 24 hours. Joints after processing with this mixture become usable almost immediately. Naturally, only at low pressure.

There is no need to say anything negative about the longevity of Loctite. Even engine oil with a temperature of 125 degrees is not able to 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 can affect its strength, but only slightly.

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

• high price tag.

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

Permatex 51813

Permatex is one of the most popular analogs of the anaerobic sealant Loctite. Perhaps, it became popular, first of all, due to its price - it is three times lower than the cost of the first. An interesting fact is that 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. 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 such liquids as engine oil, gasoline and antifreeze.

The obvious difference between this sealant is the long cure time. It sets more slowly, so it will take a little longer to withstand it. But this problem can be solved. Permatex has an activator commercially available that can shorten the cure time. Even with the purchase of a sealant and activator, the cost of Permatex remains significantly lower than Loctite.

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

• long time for polymerization.

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 compound can be used for fixing pipe connections with threads up to M80 and with a gap not exceeding 0.5 mm. Efele 133 reacts firmly to continuous vibration, shows high performance at high pressure, can be used as a replacement for tape, rewinding, spring washer and similar mechanical fixing means.

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

• The optimum ratio of price and quality.

• not found.

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 or shift, and also shows high resistance to chemicals and high temperatures.

The composition hardens rather quickly and holds perfectly in the gaps. However, this cannot be called an absolute plus. Due to the rapid solidification, it is impossible to adjust the part. In addition, its cost is quite high.

• fast sealing;
• freezes quickly.

• cost.

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.

• reacts steadily to high temperatures, corrosion, prolonged vibration, exposure to liquid, gas, oil.

• not found.

QuickSEAL 710

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

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

But this is not the only advantage of the QuickSEAL 710. It can be dismantled very quickly if the need arises. It has an easily disassembled degree of fixing of parts and can be used if necessary to seal connections on the following bases:

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

The QuickSPACER ® 710 complies with the existing global standard. This allows it to be used when working with gas, water, compressed air and gasoline.

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

• not found.

Quickspaser 716

The composition has an average level of fixation. It is designed for applications such as sealing and joining threaded parts and is resistant to vibration and linear expansion. Retains all its properties at temperatures that range from -50 to 150 degrees. Sealants of this kind are widely used in cases where it is necessary to seal joints when laying gas, water and compressed air pipelines.

• resistant to vibration and linear expansion.

• not found.

SealUp

SealUp - proved to be excellent in work. It can be used for joints, joints and couplings when installing air conditioners and is capable of creating 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 its elasticity;
• adjoins the surface perfectly;
• able to fill any microscopic cracks.

• not found.

Schrauben Sicherung mittelfest

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

• prevents corrosion;
• strong composition.

• not found.

Best winding sealants

Matrix threads

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, intended for systems supplying hot and cold water for various needs, as well as drinking and technical, necessary for heating and gas supply ...
The sealant is wear-resistant, heat-resistant and resistant to aggressive media.

• has a sustainability of water pressure 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 the thread with high-quality connecting properties in the shortest possible time.

• not detected.

Henkel Tangit Uni-Lock

Designed for sealants of pipes in joints in 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 filaments containing filaments. The contents of the container can be wound directly onto threaded pipe coils. The winding process is carried out to the desired place in the direction of the turns and starts from the end of the pipe.

• joints assembled on such a thread are easily adjustable;
• very easy and simple to use;

• not found.

MasterProf MR-UIS. 13 0199

For the purpose of sealing threaded joints, sanitary thread made of flax 55 m, 40 g is widely used. Excellent for assembling and twisting heating and plumbing systems.

• excellent sealing;
• durable;
• high quality.

• not found.

FUM Valtec tape

The composition of such a tape contains a fluoroplastic sealing material, which is perfectly suitable for sealing joints on the threads of pipelines through which gas and liquids are transported, which are not aggressive to Teflon. Oxygen substances are an exception. Vaseline oil creates a film coating. There is a possibility of application at temperatures from - 20 to + 200 degrees. This 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 aerobic mastic and sealants for threading pipes of any material.

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

• not found.

Best Car Retainers

Permatex 59214

Heat-resistant medium hold-down agent thickens and fixes threads. Leakage-free and leak-proof. Adjustments are allowed during the day. The substance in question can be used to seal bends, plugs, and other connecting parts on the thread. The presence of Teflon prevents mashing. Its leakage into the system itself is excluded.It can easily withstand pressure up to 700 atmospheres and temperatures up to + 205 degrees.

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

• not found.

High Temperature Permatex Thread Lock

High-temperature, high-hold thread adhesive is an improved replacement for lock washers. Perfectly copes with the bonding of metal surfaces in the event of a cessation of oxygen access after the assembly process.

Scope of application - locking and prevention of loosening during vibration, does not corrode, it fixes well thermal and high-load connecting threads. Operating temperatures range from -54 to + 232C °.

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

• not found.

ABRO TL-342 THREADLOCK

Functional fastener for fasteners larger than 6mm.
Seals fittings, valve cover bolts and pallet bolts in any places where there is a need to replace spring split or spring washers.

• the ability to create a high-strength elastic material that will not lose its benefits 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 fast drying in 20-30 minutes on metal surfaces;
• hardens completely in 24 hours;
• has an average strength.

• not found.

Best hardening retainers

LMG MG-414

With the help of a threaded connecting latch, the option of spontaneous loosening at the point of twisting is removed. In terms of properties, it replaces mechanical fixing methods (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 vibration, shock loading and thermal expansion. Highly resistant to all types of technical fluids.

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

• not found.

Mannol 9927

Used on joints with heavy loads. Prevents loosening and self-loosening, replaces mechanical fixation methods.

• perfect sealing;
• affordable cost.

• not found.

AVS AVK-133

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 cracks up to 0.4 mm in the absence of air, provides reliability and will not allow corrosion to appear. Quite resistant to fuel, water, gas and machine oil.

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

• not found.

The best plastic sealants

LOCTITE VR 5921

Viscous pasty mass of red-brown color, emitting a characteristic alcoholic smell. When the solvent evaporates, a very strong and elastic bond is formed. Suitable for fittings, assemblies and flanges.
Top quality product that has earned positive reviews and expert approval. Differs in 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 found.

IMG MG-414

One of the best thread lockers used in the automotive, construction and plumbing industries. Increases the strength of the entire joint. 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;
• High-quality connection;
• Strength characteristics.

• Not found.

Today, in modern, domestic and foreign industry, there is a huge variety of similar compositions that help to eliminate pipe leakage at the connecting points. Conscientious manufacturers offer materials that are similar in characteristics and performance.