When carrying out repair and construction work, a person is faced with various types of sealants, some are designed to join materials in a high humid environment, while others are able to withstand high temperatures. The latter are in great demand among motorists and builders, as they are able to provide good technical characteristics and guarantee the best sealing.
The editors of the site "bestx.htgetrid.com/en/" have prepared for you a rating of the best heat-resistant sealants for 2020.
Content
Purpose and features of each model
Each product is based on a polymer composition, without which it is impossible to guarantee good adhesion and strength. Different materials can be used depending on the field of application: silicone, silicate, bitumen, etc. Most of the manufacturers of products for sealing, prefer to produce products in tubes, as this simplifies operation. A person can squeeze the contents out on their own or resort to using a mounting gun.
Depending on the production method and composition, there are three types of sealants:
- One-component. This product is used ready-made, no preliminary mixing is required. Adhesion occurs within a few hours, while the requirements for the climate are minimal, it is only important to maintain room temperature and normal humidity. The layer thickness should not exceed 10 mm, in some cases 2 mm is allowed, a larger value will only harm. More detailed instructions on consumption and method of application are indicated on the product label.
- Two-component. Such a sealant consists of two materials - a base and a catalyst. To make the connection to the surface, the product is first mixed. It is important to remember that the resulting mixture cannot be stored for a long time, therefore it is recommended to use it immediately so that it does not dry out.
- Three-component products consist of a base, a hardener and a catalyst. As in the previous version, in order to finish polymerization, you must first connect the components.
When purchasing sealants for high temperature applications, it should be borne in mind that there are two broad categories:
- The first includes products that can function properly at a temperature of 1300 degrees, they are called heat resistant... Such components are suitable for furnishing stoves, as they can withstand open flames. This sealant contains sodium silicate. The stores sell items called "fireproof" and "fireproof" - they all belong to the same type, the difference lies in the maximum temperature.
- The second category is heat resistant products. This type is most popular and is used in various structures and structures where the temperature does not rise above 350 degrees. The substance is intended for joints, connections and filling of external gaps.This option is more popular, since its scope is vast, and the price is democratic.
According to the composition of the polymer component, the products are divided into two groups:
- Acidic. The peculiarity of sealants is that during polymerization they create acetaldehyde. The resulting substance is dangerous to some surfaces, as it can destroy the outer part. Therefore, it is important to select the correct material to which the sealant is applied. Metal and concrete structures should be immediately excluded, since the former will undergo a corrosion process, and the latter will begin to crumble. All this will disturb the beautiful appearance and worsen the technical characteristics.
- Neutral. The product consists of heat resistant silicone, when the polymerization process takes place, water and ethanol are released. The main advantage of the composition is safety for materials and humans. They are often found in the store and have a wide range of applications. A seam filled with a neutral substance is restored in a few hours and retains its aesthetic appearance for 15 years.
Despite all the divisions and varieties in composition, all products have some common properties:
- Strong bond of materials - polymer components that are present in the sealing liquid have good adhesion to almost any surface. The product is not limited to metal and concrete, builders use a compound for wood, glass, ceramic structures, plastics, etc. A wide range of applications is one of the main advantages of a heat-resistant sealant.
- Plastic. After the installation work and the end of polymerization, a person receives a material that has good plasticity. The vibration resistance is increased and the chance of cracking is minimized. Temperature changes and climate change are not terrible for such substances.
- Most are highly resistant to moisture and sunlight. Sealants are used to treat external surfaces located on the street side.
According to the area of use, the product is divided into three large categories, but in reality there may be more of them:
- Sealants for construction work. Used in the construction of stoves, baths, etc.
- Automotive locksmiths use heat-resistant substances when repairing vehicles.
- Special purpose trains. Such models are designed for specific surfaces and situations.
Advantages and Disadvantages of High Temperature Sealants
These adhesives are often used to join stoves, fireplaces, chimneys and similar structures. But no less popular are substances designed to create a seal inside automotive elements that are exposed to high temperatures.
Positive sides
- Heat-resistant products are able to withstand temperatures up to 1300 degrees. This allows them to be used in almost any field. In addition, manufacturers produce models capable of operating at 1500about, however, they are able to withstand such a temperature for several seconds or minutes, then the composition will begin to decompose.
- By choosing the right sealant, a person will be able to join and seal any surface, including glass and ceramics. It is only important to look at the purpose of the goods in order to avoid mistakes, since models are sold that can function only with a specific material.
- Manufacturers release substances in various colors, which allows you to choose the model that will be combined with a specific object or interior. Of course, there is little technical benefit from this, but maintaining the aesthetic appearance is an additional plus.
- It used to be dangerous to use high-temperature sealants, as the composition contained asbestos products, which were recognized as carcinogens. Today they are being replaced by a safer substance - sodium silicate.
- Installation of a warm floor, chimney, ventilation and even doors is impossible without the use of hermetic substances. Since they guarantee the user not only a strong connection and good insulation, but also protect structures from unexpected fires. This is also important to consider when purchasing an adhesive.
disadvantages
- Some manufacturers add iron oxide to the composition, which is good in principle, but on contact with work surfaces, the color can acquire an unpleasant brown tint, reminiscent of rust. Of course, there is nothing negative in this phenomenon, but the external impression deteriorates. Therefore, such compositions are recommended to be used for interior decoration, where aesthetics does not play an important role.
- Due to the fact that most of the sealants include silicone, it will not work to apply paint on such a surface, since it simply does not grasp the working part. If in some cases there is nothing wrong with this, then when repairing cars, the locksmith faces certain difficulties.
- The drying rate of some models reaches a speed of 2-3 mm per day, which is very long, given that more layers are applied. Therefore, the operating time increases significantly. When a person needs to close up thick seams, there is a possibility that the composition will not set, since constant access to oxygen is required for high-quality polymerization.
- When repairing cars, it is important to take into account that the room temperature should exceed 0 degrees, since with negative values polymerization is disturbed, which will lead to negative consequences.
Rating of quality acrylic models
RAMSAUER 420 KACHELOFEN
Heat-resistant mass, designed to create a high-quality connection with stove tiles and any absorbent base. The product is based on acrylic. The product is completely ready for use after purchase, which increases the efficiency of the device.
Any crack in the tile will no longer be visible, and the surface will acquire additional protection against water penetration. After 24 hours, as soon as polymerization has taken place, paint can be applied on top. The manufacturer offers 18 colors, so finding the right one is easy.
It is sold at a price of 722 rubles for 310 ml.
Advantages:
- Good connection;
- Withstands high temperatures;
- 18 colors;
- Compatible with water-based paints and varnishes;
- Film formation time - 10 minutes.
Disadvantages:
- Price.
MasterTeks ProfiMaster
One component acrylic polymer based sealant. Suitable for providing reliable sealing in bathrooms, kitchens, basements and similar places. Withstands temperatures up to 80 degrees. Before use, it is important to pre-treat the work surface and clean it from various contaminants, such as grease.
The average price is 239 rubles for 290 ml.
Advantages:
- Good efficiency;
- Suitable for bathroom applications;
- The hardened composition can be painted in any color.
Disadvantages:
- Not found.
Soudal colorless 280 ml
The model is designed for construction work of average complexity. The product guarantees a high-quality seam with a maximum resistance of up to 120aboutwhich is a good result. Bonds easily to surfaces including ceramics, glass, metal, wood and PVC. The only drawback is that it cannot be painted after drying. It can be used for external and internal operations.
The average price is 307 rubles.
Advantages:
- Wide range of applications;
- Good adhesion;
- Convenient application;
- Optimal price;
- Withstands temperatures up to 120 degrees.
Disadvantages:
- Not found.
Top 3 products based on bitumen
MasterTeks Profi Master
If a person is looking for a good option for a roof, then this is a suitable solution that will allow to glue and seal the top coatings. It can be used to organize high-speed repairs. Any crack in the roofing material will be effectively sealed with bituminous resins that will not let moisture through. The only caveat is that it cannot be used in conjunction with galvanized iron. After drying, it does not stain, this is important to consider when buying.
It is sold at a price of 240 rubles for 260 ml.
Advantages:
- Durability;
- Seals the material well;
- Suitable for wood;
- Withstands temperatures up to 90 degrees.
Disadvantages:
- Not found.
Tytan Professional
A more expensive option that will create a quality seal for any roof. The product is based on modified bitumen, which increases the technical characteristics and capabilities of the product. It is used as the main product for renovation and protection of seams. Can be used on surfaces where there is a drain or ventilation ducts. Differs in adhesion to various materials, including metal.
It is sold at a price of 530 rubles for 310 ml.
Advantages:
- Connects steel and wood structures;
- Suitable for use under drainage elements;
- Heat resistance of the seam - 90 degrees;
- Qualitative composition.
Disadvantages:
- Not found.
Quelyd black 310 ml
A good model that can create a reliable seam with a variety of materials. It can be used in ventilation systems, when organizing a chimney, as well as in skylights. The product is based on standard bitumen, so the maximum heat resistance of the seam can reach 80 degrees and no more. It is produced according to German technologies, so the aesthetic appearance remains for a long period, this also has a positive effect on operation.
Average price - 270 rubles.
Advantages:
- Reliability;
- Long service life;
- Manufactured according to German technology.
Disadvantages:
- Low heat resistance.
High quality polyurethane based sealants
Bostik PU 2637 light gray 600 ml
One-component product designed for sealing various joints. The main advantage of this product is that it can be painted after drying. Used for outdoor and indoor work. The maximum seam stability is 70 degrees. Manufacturer - Sweden. When performing repair work, it is important to understand that the maximum seam depth is 4 mm.
Sold at a price of 465 rubles.
Advantages:
- Efficiency;
- Suitable for working with various materials;
- Durability;
- Cost.
Disadvantages:
- Not found.
Tiamat PU WindShield
A reliable sealant suitable for many applications. A high-quality compound is able to provide adhesion to steel, copper, aluminum, ceramics and carbon. In addition, it is used for gluing glasses. The maximum operating temperature is 90 degrees, which is an excellent result. The speed of hardening is 3.5 mm per day.
Sold at a price: from 600 rubles for 600 ml.
Advantages:
- Excellent adhesion to metal surfaces;
- Heat resistance;
- Quite good curing speed;
- Efficiency.
Disadvantages:
- Not found.
WS PU gray 600 ml
Elastic sealant designed to create a tight seal for ventilation ducts and metal structures. The main element in the composition is polyurethane, which can be painted at the end of the work. Suitable for ensuring a high-quality connection and filling cracks with a width of at least 6 mm. Convenient packaging will make it easier to store the product.
The average cost is 406 rubles.
Advantages:
- Designed for filling joints over 6 mm;
- Convenient packaging;
- Ready to use;
- Suitable for various materials;
- Elongation at break about 750%
- Heat resistance - 80 degrees.
Disadvantages:
- Not found.
Top Best Silicone Products
HERMENT High Temperature
An excellent one-component sealant designed to seal structures that are constantly exposed to high temperatures.Suitable for use in heating systems, and will also become an irreplaceable assistant in the repair of cars and internal combustion engines. The product is distinguished by high-quality adhesion to enamel, metal, wood and glass. Color - red-brown.
Sold at a price of 406 rubles.
Advantages:
- Price;
- Good adhesion;
- Efficiency;
- Resistant to chemical attack.
Disadvantages:
- Not found.
OTTOSEAL S17 С65
A good product that can withstand temperatures up to 285 degrees. Non-corrosive when used on metal surfaces and guarantees reliable adhesion. Suitable for use in the household and car services.
Sold at a price of 1,400 rubles.
Advantages:
- Best quality;
- Convenient packaging;
- Efficiency.
Disadvantages:
- High price.
Kudo KSK-152
A cheap option that can be used in a variety of systems. Of course, compared to the previous model, this product will have significant disadvantages, for example, a short service life. However, efficiency does not take place, since the sealant has high resistance to temperatures, where the maximum value is 300 degrees.
Sold at a price of 380 rubles.
Advantages:
- Low cost;
- Withstands high temperatures;
- Low consumption;
- Wide range of applications.
Disadvantages:
- Short service life.
Makroflex TA145
One of the best options to handle any surface. Heat resistance reaches 260 degrees, but also can withstand temperatures up to 315about... It guarantees the user high-quality adhesion to most building materials, which allows to increase the area of application. The only drawback is that a pungent smell is emitted during vulcanization, so it is recommended to carry out work in construction masks.
The average cost is 390 rubles.
Advantages:
- Resistance to atmospheric changes;
- Suitable for metal structures;
- Good grip.
Disadvantages:
- Strong smell.
Finally
To achieve the best sealing, it is recommended to use only quality models. Because this will increase the service life of the seam, as well as create a safe operating environment. If you have experience using the models described in the rating, or more interesting representatives, share your opinion in the comments.
