Features of Butyl Sealants

The surfaces to be bonded (glass and spacer) must be free of dust, liquids and other contaminants,
The applied strip of butyl must be continuous, without breaks in the distance frame and in the corners,
After combining the glasses with the distance frame, it is necessary to crimp the glass unit along the contour.

Structure and physical properties

High molecular weight polyisobutylene is a saturated polymer of carbochain structure, due to which it is highly resistant to oxygen, ozone, acid solutions, alkalis and salts, and also withstands the action of oxidizing agents such as bleach, permanganate and potassium dichromate.

Polyisobutylene does not swell and does not dissolve in ethyl alcohol, acetone and many other oxygen-containing polar solvents, it is easily soluble in aliphatic and aromatic hydrocarbons.

With prolonged heating in air to 100 ° C, polyisobutylene does not chemically change, but ductility increases and at 180–200 ° C it can be molded.

High molecular weight polyisobutylene retains its elastic properties to −55 ° C.

Features and specifications

Butyl sealant is a one-component thermoplastic mass based on synthetic rubber (polyisobutylene), which determines the strength of the material and its consistency. Sealant filler is half the composition of the material (as for high-quality sealants). Butyl sealant has its own specificity, which consists in sealing window seams and joints.

Butyl and polyisobutylene sealant has a different composition, but their properties are very similar. Thanks to a wide range of properties and advantages, these materials are in demand and are used in repair and production fields.

Advantages and disadvantages

Any building material is endowed with advantages and disadvantages. Before you buy or apply this or that sealant, you need to study all the pros and cons of the material.

Among the advantages of butyl sealants are the following:

lack of volatile components,
high adhesion to many substrates: it adheres well to aluminum, glass, steel,
low vapor permeability and thermal conductivity,

increased degree of elasticity, strength,
UV resistance
affordable price range,
excellent tolerance of different temperature conditions: from -55 to +100 degrees,

long operating period
safety for human health and the environment,
short setting time, hardening,
the possibility of applying to a damp surface.

Along with the many advantages of a hermetic material, there are only a few drawbacks:

only available in black,
loss of tensile strength at low temperatures,
narrow range of applications.

The ratio of positive and negative qualities of butylene sealant suggests that the material is reliable and high-quality.

Application area

The main field of application of butyl hermetic materials is the manufacture of double-glazed windows. With the help of sealants, gaps, joints, and also connecting zones in various designs of wood, glass, metal are sealed.

The only drawback of butyl rubber sealant is that it cannot be used for internal work.

Thermal insulating panels are sealed with a sealant, air conditioning systems are sealed, and containers and vessels are sometimes sealed.

Butyl rubber sealant

Modern butyl rubber sealant is widely applicable in the construction industry: construction of buildings, installation of communications and more.

Germabutyl is used:

for isolation of contact of elements in building constructions,
for sealing joints between panels,
for sealing joints
for anticorrosion treatment of seams of the car body,
for sealing joints on water pipes,
for waterproofing purposes,
when warming window and balcony seams.

Since this type of sealant adheres well to many types of surfaces, its scope is wide.

The composition of hermabutyl includes: butyl rubber, mineral components, an organic-based solvent, modifying additives.

It has the following advantages:

increased elasticity
when working does not require heating and mixing,
high strength
high adhesion to many materials
resistance to different temperature conditions,
the possibility of surface staining with paints.

Sealant "Vicar"

Butar rubber hermetic material "Vicar" is especially popular because it is endowed with a number of properties and advantages. This is a homogeneous mass, which includes artificial rubber, bitumen, filler, solvent, technical additives.

It is durable, waterproof, elastic, has good adhesion to such substrates as concrete, metal, tile, ceramics, PVC, natural stone. The sealant is durable, resistant to ultraviolet and temperature extremes.

With its help perform:

sealing joints, connecting seams in order to increase heat resistance (internal / external work is allowed),
closing joints of sandwich panels,
roof sealing
sealing ventilation systems, chimneys,
sealing joints in motor vans and bodies in order to prevent corrosion.

Sealant is available in a 310 ml tube. The sealant comes in two colors: gray and black.

Vicar sealant is also available in the form of a tape of different sizes and colors: gray, black, dark gray. The tape is a double-sided self-adhesive material that does not absorb moisture. During use, it does not need to be heated. Most often used in sealing joints of sandwich panels, stained-glass windows, facades, hard roofs, ventilation systems. It is used to connect elements of vapor barrier, gluing and gluing paintings and parts, as well as cushioning material in plumbing, ventilation, and sewer systems.

Sealant Orgavyl

Another high-quality butyl sealant manufactured by Orgavyl, an American manufacturer. Its area of application is somewhat different from the rest of butyl sealants: it is used for automobile glasses, for sealing auto optics (headlights).

Sealant Orgavyl is especially popular due to the fact that it:

no cracks
does not dry out
provides high-quality sealing, waterproofing,

can be used many times, just reheating is enough,
has a high degree of moisture resistance,
resistant to antifreeze and various oil substances,
non-toxic, odorless,
endowed with good adhesive properties
No hardening time required
Does not stain auto optics details,
prevents fogging of headlights of the car.

Besides all the benefits, the sealant is easy to use. To do this, you need:

clear the headlight
slightly stretched, place hermetic tape on it,
heat it with a hairdryer and attach the glass, pressing it well.

It is produced in the form of a black tape of a certain size.

About the features of butyl sealants, see the next video.

Varieties of sealants

Most butyl sealants require special conditions for application: they must be heated before polymerization. But thanks to modern additives, some materials require only a cold application method, their deformation-strength characteristics are achieved even without heating. Typically, the compounds that are applied by the cold method are used only for external work, whereas after heating, sealants may well be used on internal ones. Examples of high-quality products are butyl sealant TechnoNicol 45, Titanium, Vikar, Orgavil and others.

Sealant "TechnoNikol 45"

The product under this brand is positioned as a sealant for professional use. It has many advantages - it dries in just an hour, resistant to temperature extremes and any atmospheric factors. Sealant is indispensable for strengthening joints and waterproofing building structures made of any material. The composition is also used for corrosion protection of steel buildings, to protect against the destruction of ceramics, glass, modular wooden options.

The sealant is characterized by a low consumption of 1 m. For example, for 1 m of a seam 1 cm wide and 5 mm deep, only 45 g of the composition will leave. "TechnoNikol 45" is sold in buckets of 8-16 kg, it is easy to find it in any hardware store. Operation of products after drying of the joints is possible at temperatures of -50 ... + 80 degrees. Work with butyl compounds in compliance with safety measures, avoiding contact with the skin, into the body, using protective clothing and gloves.

2. Silicone Acrylic Sealants

This type of sealant has appeared recently and is considered very promising. The basis of silicone acrylic (acrylic-silicone, acrylic-latex) sealants is acrylic with the addition of a silicone aqueous dispersion (latex) and a number of other additives. These sealants combine the positive and negative properties of acrylic and silicone sealants.

Siliconized Acrylic Sealants TITAN

Compared to purely acrylic sealants, siliconized are more expensive, have greater elasticity, moisture resistance, strength and are well sealed and join different surfaces. According to various sources, the temperature range of application ranges from -18 ° C to + 35 ° C, and heat resistance ranges from -20 ° C to + 70 ° C. With the temporary contact of water on the sealant, its properties practically do not change. But with constant contact with water, it quickly collapses, it can not be applied during rain and snow. Therefore, silicone acrylic sealant is not used for sealing joints located below the water level, underground, for sealing pools, cars and ships, surface defects and closed joints, as well as in closed rooms with a relative humidity of more than 90%. According to various estimates, the predicted life of siliconized acrylic sealants is at least 10 years.

3. Polysulfide (thiocol) sealants

Polysulfide Sealants, eg, Polysulfide and Polysulfide S and others are made on the basis of liquid polysulfide rubbers and usually consist of two components that are mixed immediately before use. After mixing, the vulcanization process begins and the components turn into a rubbery mass. Polysulfide sealants and mastics have good adhesion to aluminum, galvanized steel, many other materials and glass. Therefore, for example, polysulfide sealant is used in the manufacture of double-glazed windows. In the world more than 80% of double-glazed windows for energy-saving glazing of buildings are made with their use.

Seal Sealing with Polysulfide

Polysulfide mastic

These types of sealants possess high oil and gas resistance, well resist oxidation, atmospheric precipitation, moisture and gas impermeability, maintains elasticity at low temperatures. Sealant Properties polysulfide-based are diverse: they are resistant to marine, tap and distilled water, resistant to 20% sulfuric acid, 10% hydrochloric acid, 20% acetic acid, 40% caustic soda and potassium hydroxide, and excellent heat resistance. The operating temperature of thiokol is from -60 ° С to + 130 ° С. Sealants are widely used in various fields of industry and in construction, for example, for sealing a variety of construction joints, in the case where it is necessary to provide high-quality sealing. Usually they are used for sealing joints, heavy and light prefabricated elements, masonry joints and concrete structures, water tanks, channels, primary sealing of double-glazed windows, etc.

The disadvantages of polysulfide sealants most often indicate the presence of only two colors (gray, black), the difficulty of applying a two-component system and the fact that they are not viscous enough and can drain from vertical surfaces and leak from the joints. In addition, polysulfide sealants (thiokol mastics) cannot be applied to non-ferrous metals, as sulfur contained in the sealant causes corrosion. The total mass of polysulfide sealants is not used very widely, and often they are replaced with polyurethane sealants. The durability of their operation in the room is estimated at (10-20) years, and in outdoor structures - (4-6) years.

4. Bitumen sealants

This type of sealant is made on the basis of bitumen (from the Latin "mountain resin"), which is modified with various polymers and rubbers. The result is materials with excellent adhesion, with a short setting time, forming a strong and flexible layer during application. Bitumen sealants protect metal structures from corrosion, resistant to UV radiation, is not destroyed by mold, fungi, microorganisms, even in high humidity. Bitumens are waterproof and insulating materials. They are resistant to alkali and acids, many salt and municipal wastewater solutions, as well as to manure and slurry. Bituminous sealants have excellent resistance to aging, adhere well even to a damp surface. The properties of sealants adhere perfectly to surfaces such as masonry, concrete, metal, glass, wood and bituminous materials, and these types of sealants can be used as putties and adhesives for roofs, for sealing aluminum shaped roofs and roof edges, for filling cracks in the roof chimneys. A concrete example is high-quality bitumen roofing adhesive sealant Elastoruf Bostik Elastoroof LF and rubber-modified TYTAN roofing sealant

Bostik Elastoroof LF and TYTAN Bituminous Sealants

Bituminous sealants are also used for similar work on foundations and socles. For example, for filling cracks and defects in stone substrates before installing waterproofing rolls, for gluing waterproofing sheets, for eliminating leaks in pressure vessels, pipelines and sewers, in drainage systems.

Among the advantages of bitumen sealants, the possibility of applying them to a damp surface and not a high cost are usually distinguished, and the disadvantages are low resistance to high temperatures and one single color - black. The service life of bitumen sealants is 20 years.

5. Bituminous mastics

Bituminous mastics contain a mixture of petroleum bitumen or tar and mineral fillers. As fillers, dolomite, chalk, cement, ashes of solid fuels, asbestos, mineral wool, etc. are usually used. Depending on the binder used, bituminous, bitumen-rubber and bitumen-polymer can be used.

Hot bituminous mastics, for example, BIGUMA - SKC or waterproofing compound SK (SK Coating), are first heated to a temperature of (150-180) ° C and applied hot to a pre-primed base, forming a monolithic coating when cooling.These mastics are used for waterproofing the roof, for installing external waterproofing of buildings from soil moisture and pressurized water, for covering structures of concrete, aerated concrete, plaster, silicate brick in contact with the ground (exterior walls of basements, basement bridges, underground garages, bunkers, base plates etc.). And also for sealing expansion joints and for protecting many metals from corrosion. The obvious advantage of such mastics is the ability to work at temperatures up to - 15 ° C.

Cold-use bituminous mastics are widely used for external waterproofing devices. They may contain solvents or be water based (emulsions of bitumen in water). For example, Bitumen-polymer bitumen mastic based on bitumen emulsion, improved with polymers without solvents and fillers, or K100 waterproofing compound - a one-component latex-bitumen-based insulation mass that does not contain solvents or fillers. The curing of such mastics occurs as a result of evaporation of the solvent or water.


Bitflex	K100 - braun	SK Coating

Mastics are ready for use and are used for waterproofing foundations, roofs, external walls of basements, and tanks in order to protect them from soil moisture and water under pressure, as waterproofing concrete products and structures before laying them in the ground, etc.


Foundation waterproofing	Roof waterproofing	Waterproofing walls

A common advantage of mastics for hot and cold application is the formation of a continuous monolithic seamless waterproofing coating. The potential service life of roof coatings based on bituminous mastics is from 5 to 25 years, and for underground structures - more than 30 years.

6. Silicone sealants

Silicone sealants made on the basis of silicone rubbers. As a rule, these are the well-known one-component sealants supplied in standard 310 ml cartridges. The process of vulcanization of these sealants occurs in contact with the atmosphere, after extrusion from the cartridge. Another type of silicone sealant is the compounds used for the manufacture of injection molds, sealing surfaces, pouring into joints, etc. They consist of two components: paste and catalyst, shipped separately. Before use, the components are mixed and the vulcanization process occurs immediately throughout the paste. After vulcanization, rubber-like materials are formed with chemical inertness, high elasticity in the temperature range from -50 ° C to + 200 ° C, resistance to water and aggressive environments, resistance to UV radiation, etc. Today, the properties of silicone-based sealants give them the right to be universal. This type of sealant is widely used in everyday life, industry and construction for sealing various seams, components of electronic devices and boards, gaskets in engines and radiators, etc.

Silicone sealants

European-made silicone sealants, for example, Bostik Trinkwasser-Silicon, Bostik Unterwassersilicon, Bostik Sanitar-Silicon, Bostik Hochtemperatur-Silicon, etc. are good modern materials that are not inferior to polyurethanes in mechanical properties and price.


Bostik sanitar-silicon	Bostik 2650

At the same time, various types of silicone sealants presented on the market today have not only a lot of advantages, but also a number of significant disadvantages.

For example, “acetate” sealants, during the curing of which acetic acid is released, cannot be used to seal concrete and metal structures, marble surfaces, natural stone and some other materials. You can use “neutral” (amine, amide, alcohol, etc.) sealants, but they are expensive. To polycarbonate, polypropylene, PVC and a number of other materials, the adhesion of silicone sealants is insufficient. They have shrinkage, they can not be painted. Indoors, they quickly lose adhesion, especially where there is contact with water, and outside they lose adhesion even faster. In case of accidental damage to the joint, the elastic silicone bursts and cannot be repaired since silicone does not adhere to itself. Therefore, the entire damaged seam must be completely removed and replaced with a new one.

It should also be borne in mind that many firms are engaged in the purchase and packaging of high-quality foreign silicone sealant from large containers into small cartridges and tubes. Moreover, to reduce its cost, some of these companies introduce various additives into the sealant, for example, cheap oil as a plasticizer, which sharply reduces the quality of the original sealant purchased. Therefore, the durability of operation of not expensive silicone sealants in rooms, according to various estimates, is (3 - 10) years, and in outdoor structures they lose adhesion even faster (2-3) years and literally crumble in their hands.

7. Butyl sealants

Butyl Sealants these are types of sealants, which are a thermoplastic mass, the main component of which is synthetic rubber polyisobutylene. An example is the one-component hot-melt butyl sealants Bostik P5125, Bostik 2000.


Bostik P5125	Bostik 2000

Polyisobutylene is resistant to oxygen, bleach, potassium dichromate and permanganate, alkali solutions, acids and many other chemical compounds. Vulcanized sealant in appearance and texture resembles rubber.

Among the positive properties of butyl sealants are usually distinguished by their harmlessness to human health and the environment, high adhesion to glass, aluminum and galvanized steel. They have low vapor permeability, low gas permeability and thermal conductivity, do not contain solvents, which is very important in the production of double-glazed windows, as well as good elasticity, resistance to UV radiation, low cost. The sealant maintains its elasticity and elasticity in the temperature range from –55 ° C to +100 ° C and above.

The main field of application of butyl sealants is the manufacture of double-glazed windows. They can also be used for sealing gaps, joints and joints in metal, glass and wooden structures, for gluing heat-insulating panels, sealing ducts and air conditioning systems, as well as for sealing vessels and containers. Butyl sealant service life exceeds 20 years

Unfortunately, these sealants have only black color and low tensile strength at low temperatures, which narrows the scope of their application.

8. Tape sealants

Tape Sealants - These are special tapes consisting of a base on which polymers are applied. This type of sealant is made on different bases with coatings of bitumen-rubber and butyl-rubber composite, acrylic material, etc. Sealants, as a rule, act as sealants to protect joints and joints from the penetration of air, moisture, sound, various active substances .

Various forms of tape sealants are produced: diffusion (membrane), vapor barrier, in the form of strips of bitumen-rubber components, in the form of strips of butyl-rubber components, in the form of sausages. Each tape sealant has its own specific functional characteristics and purpose. For example, butyl tape sealants are harmless to humans and the environment, can be used for 20 years or more without losing their properties, simple and convenient to use. Therefore, they are actively used for high-quality long-term waterproofing, noise and vibration isolation, sealing, fixing and gluing materials in construction, industry and in everyday life.


Bostik-grip-1182	Butyl tapes Slion	Butyl tape Tytan

The terminology of tape sealants includes pre-compressed sealing tapes (abbreviation PSUL). These are pre-compressed strips of foam rubber, which are impregnated with special solutions that give the foam characteristic features: smooth lifting, resistance to UV radiation, resistance to wind loads, resistance to rain and snow, etc. When PSUL tapes are placed in the assembly joint, they expand and protect the joint from external negative influences. PSUL tapes are used on the external contour of the mounting seam to protect the mounting foam (insulation) from rain, wind, snow.

Vapor barrier tape sealants are used when installing windows on the internal circuit so that moisture that can penetrate from the outside does not get into the insulation of the installation joint and does not impair its performance.

Membrane and diffusion tape sealants are used on the outer contour of the window seam and are designed to remove moisture outside. The so-called outer tape.

9. Polyurethane one-component sealants

Polyurethane single component sealants are diverse types of sealantscreated on the basis of polyester resins, which quickly polymerize under the influence of air humidity into a durable, elastic rubber-like material. The material of polyurethane-based sealants works in the temperature range from -40 ° С to + 80 ° С, has water resistance, good adhesion to various materials, maintainability, corrosion resistance, resistance to weak (up to 10%) solutions of salts, acids and alkalis , it can be painted, etc. These properties of sealants are widely used in construction. For example, polyurethane sealants Bostic 2637 , Bostic 2639 and glue Simsontop are ideal for sealing interpanel seams, assemblies of prefabricated structures, roof joints, joints of building structures with concrete, metal, wood or PVC surfaces, gluing heat-insulating panels, etc.

Bostik 2637

Bostik 2639

Simsontop

However, many polyurethane sealants also have a number of serious drawbacks. For example, they contain isocyanate groups that are harmful to health. During polymerization, isocyanates, reacting with environmental moisture, emit carbon dioxide bubbles inside the material. This makes it necessary to limit the thickness of the layer applied at a time and increase the solvent content, the evaporation of which leads to the formation of bubbles and to the shrinkage of the sealant. In addition, polyurethanes are not sufficiently resistant to UV radiation, etc. According to some estimates, the durability of polyurethane sealants in rooms is - (25-30) years, and in outdoor structures - (10-15) years.

10. Sealants based on MS polymer

MS polymer (MS Polymer®) or SMP® (Silyl Modified Polymer) is the basis of a new type of sealant - “hybrid” adhesives and sealants that do not contain isocyanates and solvents.

The first technology for producing MS polymers was developed in Japan in the 70s of the last century. At its core, the MS-polymer is a polyester compound - polyurethane, in the structure of which a silanol (organosilicon) group is embedded, which, reacting with air moisture, creates an integrated organosilicon structure while curing the polymer. This can significantly improve sealant properties - rid them of isocyanates and solvents, increase resistance to UV radiation, adhesion and add other positive qualities to the material. The result was a material with a unique set of properties, which took all the best from polyurethanes and silicones. For example, in the absence of moisture MS polymer can be stored for up to 2 years, but in practice there is evidence of its storage in closed containers and more than 10 years without loss of properties! It has stable viscosity over a wide temperature range and excellent extrudability (extrudability) even in cold weather, it does not have such an unpleasant odor as mercaptan and acetate. It does not contain solvents and is safe to use, hardens quickly even at low temperatures, can be painted with any “wet on wet” paint and this does not affect the rate of vulcanization in any way. MS-polymer has excellent adhesion to all surfaces without the use of primers and primers, resistant to temperatures up to 120 ° C and short-term up to 180 ° C, inert, does not stain and does not oxidize surfaces, is more resistant to UV radiation than polyurethane, does not leave grease stains, does not corrode and does not change the color of the surfaces being sealed, is resistant to wet operating conditions, etc.

The very original diagram below (www.germet.com.ua), very clearly shows the difference between the properties of silicone - SR (blue color), polyurethane - PU (red color) and MS - polymer (green color).

2. Comparison diagrams of hybrid, polyurethane and silicone sealants

The diagrams clearly show the overwhelming advantage of MS-polymer hybrid sealants over polyurethane and silicone. Therefore, the applications of materials based on MS polymers are very wide and diverse. For example, in the automotive industry, these sealants replace welding in container manufacturing. In shipbuilding and aircraft building they are used for sealing decks, for example, materials Aqua blocker and Bostik Tarbicol MS ELASTIC. Sealant adhesives Bostic 2750 MS , Superfix MS , SUPERTRANS used for gluing glasses and mirrors, bonding metal parts and sealing units operating under high vibration load. In industry and construction, these same adhesives and sealants are used to seal welds and joints, as well as sealant general purpose for bonding granite, marble, natural stone, facade panels, sealing refrigerators. Vapor permeable is very suitable for sealing expansion and thermal expansion joints, roofs and roofs Bostic 2720 MS etc.

Aqua blocker

Bostik 2750 MS

Bostik 2720 MS

Superfix ms

The service life of sealants and waterproofing materials based on MS - polymer is higher than that of silicone and polyurethane. In terms of price, they compete with polyurethane sealants, and in terms of price / quality ratio they are significantly superior.

Specifications

Butyl sealant is a thermoplastic mass with a one-component structure, which is made on the basis of synthetic rubber under the name “polyisobutylene” - it determines the special strength and strength of the material, as well as its specific consistency.

The composition is resistant to bleach, and also does not react with acid-base solutions and many other chemical reagents. In its structure and technical and physical parameters, the sealant resembles volcanic rubber.

The main field of use of butyl sealant is the formation of the first sealing layer in plastic windows, it creates a barrier that prevents water and condensate vapor from entering the glass packet, and is also used as an additional material for their installation due to the fact that it effectively combines glass with a remote frame.

Before work, special attention should be paid to the working melting temperature of the substance, as a rule, this information is contained on the packaging, and on the parameters of the tank for loading the cylinder directly. If all these factors are taken into account correctly, then working with a sealant will not be difficult.

As already mentioned, the main active component of the material is polyisobutylene., which is a high molecular weight polymer with a carbocen structure. This structure leads to increased resistance to oxygen, as well as ozone and alkali and acid solutions. In addition, the substance is able to withstand the effects of permanganate and potassium dichromate, as well as other strong oxidizing agents.

Synthetic rubber does not swell, it is completely insoluble in ethanol, retains its physical and technical characteristics in acetone and similar oxygen-based solvents, however, it quickly diffuses in aliphatic and aromatic hydrocarbon compounds.

The material is able to withstand prolonged heating, so it does not melt and does not change its consumer parameters even with prolonged exposure to temperatures of 100 degrees, from higher temperatures when heated to 150 degrees or more, it acquires high ductility, and at this point it can begin to form. In addition, the material does not change its performance at temperatures up to -55 degrees.

A distinctive feature of the substance is its water resistance and dielectric ability - in terms of these indicators, it is second only to polyethylene and polytetrafluoroethylene.

Polyisobutylene sealant has a low gas permeability, is a non-creeping and low-strength composition.

Advantages and disadvantages

Like any other material, butyl sealant has its advantages and disadvantages. Let us dwell on them in more detail.

Of the advantages, it should be noted:

high ductility - thanks to which joints and gaps of any shapes are successfully sealed,
vapor tightness - this prevents the formation of condensation and moisture on the double-glazed windows,
the ability to repel water - due to which mold does not form on the material and the fungus does not multiply,
universality - can be effectively applied on a wide variety of surface types (steel, aluminum, plastic, rubber and glass),
environmental and chemical safety - the substance does not contain harmful and toxic substances, does not emit radiation,
excess applied composition can be quickly and easily removed,

has a long term of use - retains its sealing properties up to 20 years,
does not contain any volatile components in the composition,
It is resistant to direct sunlight
has a wide operating temperature range - from -55 to +100 degrees Celsius,
differs in reasonable price.

The disadvantages of the composition:

has a narrow scope of use,
only available in black or dark gray
at subzero temperatures, the tensile strength of the material decreases.

Area of use

The main area of use of butyl sealants is the production of double-glazed windows. Using this material, all gaps and joints that appear during manufacturing are sealed. Using it, heat-insulating panels are glued together, as well as sealing existing ducts and air conditioning systems in the room.

Some use such compositions to ensure the greatest tightness of all kinds of vessels and containers.

Sealants based on polyisobutylene often serve for the production of electrical insulating coatings and elements of anti-corrosion systems, as well as for the manufacture of chemical equipment and pipelines of various types.