Silicone-to-silicone adhesive

Silicone-to-silicone adhesive How to glue silicone products - the right choice of glue

Silicone is a soft type material with a plastic structure, which is widely used in a number of household and industrial sectors. The question of how to glue silicone products often appears when products are damaged.

Appropriate adhesives must be selected and applied correctly to repair items. Silicone glue silicone glue was invented, which is actively used.

It is silicones that have hermetic properties, do not allow moisture to pass through, do not collapse from temperature influences, as well as microscopic organisms and substances.

Brief introduction to the topic

By the type of origin, silicones can be classified as organosilicon compounds. The properties of the adhesives will depend on the structure and composition. Due to its excellent adhesion to various surfaces and low cost, silicone adhesive is popular in the construction industry.

Its main advantages are:

Silicone-based adhesive is available in a wide range, and therefore it will not be difficult to find a product on sale for a certain type of work. Such formulations are appreciated for their excellent sealing properties, fast drying and versatility. Thanks to the addition of modifying components, adhesives acquire important technical characteristics.


Silicone is a strong polymer compound made of silicone-type components with a high-molecular-weight structure.

Chemicals have a liquid-viscous texture that is visually similar to resin. The basis of the silicone-type glue is formed by synthetic rubber - an artificial-type substance that occupies half of the composition of the polymer compound. Some manufacturers may make silicone adhesives and sealants by category. The fundamental difference between them is that the glue is used for strong fixation, and the sealant is used to obtain a waterproof layer. In terms of properties and composition, the products have similar characteristics.

The silicone adhesive contains:

  • The rubber base of the chemical type polymer will act as the base of the adhesive bond.
  • The strength enhancer will affect the viscosity of the substance and will also impart the required characteristics after drying.
  • Plasticizer for improving the properties of plasticity of the glue mass is made on the basis of silicone.
  • The primer will provide high adhesive properties of the product and adherence to all materials.
  • The vulcanizer will be in charge of how fast the adhesive dries and buying a rubbery structure.

  • Color pigments are not included in all silicone products, whites, blacks and colors will mask seams and cracks.
  • Fine-grained fillers (glass and quartz dust, sand) improve the adhesion type and strength of the silicone.
  • Fungicidal type additives have antiseptic properties and also prevent the appearance of fungi and mold.

In some adhesives, manufacturers add catalysts to accelerate curing, as well as extenders. Adhesive sealant is usually produced in the form of one-component compounds for domestic use, and two-component substances are used for professional work.

Characteristics and description of silicone

As a result of the synthesis of the chemical type for polymers, elastic silicone is obtained. There are several types of material - liquids, elastomers and resins. The most common type will be rubber-like silicone, which has been widely used since the middle of the last century. The main characteristics of silicone include the following:

  1. Safety - there are no toxic substances in the composition of the materials, because it is harmless to humans, animals and even the environment.
  2. Large operating temperature range - the ability to maintain shape and quality at extreme temperatures will expand the range of applications.

  3. High degree of elasticity - even with prolonged use, the material will remain flexible and will not undergo cracking and crumbling.
  4. Water resistance - silicone products can be used in places where there is frequent contact with liquids, as well as directly in an aqueous environment.
  5. Inert to microbes - the effect of parasites is not able to affect the appearance and structure of silicone. Moreover, disinfection can be carried out easily if necessary.

What can be glued with such compounds?

What products can be glued?

If you follow the standard rules, you will be able to glue any products, including watch straps, children's toys, construction components (bushings or seals), as well as medical tubes.

The result of repair work will directly depend on many factors, and this includes the current condition of the product, the degree of damage, the adhesive solution used, and also how carefully the work was carried out.

Selection of adhesives

For the restoration of products made of silicone, several types of adhesives are suitable. To choose the right formulations, it is recommended that you familiarize yourself with the characteristics of the available options and focus on what you need, taking into account the characteristics of the product. As a rule, silicone sealants or cyanoacrylate adhesive are used to hold the parts together. Such solutions help to reliably eliminate defects, as well as firmly dock surfaces.

Excellent adhesion results will be provided by an adhesive composition that meets the following requirements:

  • Strength and elasticity - the composition creates a seam that will not be damaged when external influences and vibration loads.
  • The optimal consistency will be the consistency of the mixture for reaching hard-to-reach areas, as well as filling small gaps.
  • Ability to withstand high temperatures - it, like silicone itself, must tolerate heat without losing all quality.
  • Ease of Use - Convenience will be affected by the packaging of the substances and the method of application.
  • Fast polymerization - quality solutions can cure in just a couple of hours.

Now in more detail about all the compositions.

Silicone-type sealants

There is an adhesive for gluing silicone to silicone. It is a flexible silicone-type sealant made from silicon, which occurs in the form of sand or quartz. To begin with, polymers are made from the material, which will act as a base for the sealant. The starting material determines the basic parameters of the sealant.

The main characteristic will be a high tensile capacity, and this will make it possible to use a sealant for working with movable types of joints. The material will compensate for deformation at the joints and will not collapse when influenced from the outside.

The sealant can be used for industrial and domestic purposes, because it is able to withstand ambient temperatures in the range from -50 degrees to +200. Special types of sealed products with increased thermal stability can be heated up to +300 degrees. There is still the possibility of widespread use, and this is due to the resistance of the sealant to the negative effects of ultraviolet rays, moisture and cleaning agents.

Cyanoacrylate compounds

The base of cyanoacrylate solutions are esters of alpha-cyanoacrylic acid. In the role of additional components, it will be possible to use plasticizers needed to adjust the viscosity, as well as stabilizers to improve adhesion. Depending on the brand of the cyanoacrylate-type solution, there may be modifying components in it, which are responsible for the resistance of the resulting joint to heat and moisture. These formulations help to demonstrate resistance to organic solvents and electrical insulating properties. In order to dissolve the applied adhesive after hardening, treatment with special substances is needed.

The consumption of the adhesive is slow, and this reduces the cost of the restoration work.

The most popular brands

When choosing an adhesive composition, it will not be superfluous to study products from the best manufacturers. Among the most popular brands there will be options with an affordable cost and optimal performance for working with silicone products.


This adhesive composition from the German company Rema required for express repairs and also for the restoration of silicone products, regardless of size and condition. The solution will be consumed economically and convenient to use.

This adhesive is based on three types of solvents.


This composition will be a one-component liquid adhesive with a transparent structure and low viscosity. The resulting glue line is resistant to precipitation and temperature extremes. The purpose of the solution is not limited to household type of repair work, and it has found application in the industrial field. Due to the fact that there is the possibility of gluing many types of surfaces, the tool is considered universal.

The adhesive is perfect for working with small particles of silicone products and when you need to quickly fix surfaces. It is not recommended to use this brand of glue only when working with porous surfaces and products that have been in contact with water for a long time.


This silicone product adhesive is a one-component, self-leveling rubber that cures at room temperature and has high mechanical type performance. The substance is used for working with silicone products and for gluing silicone to surfaces of other types of materials. The features of the brand products include:

  • Adhesion without the use of a primer.

  • Acetate hardening method.
  • Self-leveling after everything is applied.

The universal type mortar will provide electrical insulation and tightness, and will also be able to withstand extreme temperatures and vibration loads, and still does not lose its original characteristics over time. Thanks to the packaging with the tips, the solution will be convenient for spot application.

Precautions when handling adhesive

When gluing silicone products, it is recommended that you familiarize yourself with the safety rules in advance.

Compliance with even the simplest rules helps to avoid dangerous situations, and the following can be added to the basic safety rules:

  • Silicone-to-silicone adhesive Work with adhesive should be carried out in a well-ventilated area.
  • A respirator can be used to avoid inhaling vapors.
  • To protect hands from contact with glue, wear rubber gloves
  • During the entire process of performing work, the ambient temperature should be from +15 to +25 degrees.
  • If the humidity inside the room is more than 60%, work should be done elsewhere, because this can affect the quality of the seam.

And now a little about how to apply the product.

Homework technology

Follow the step-by-step instructions to adhere parts of silicone-type products to each other. Before starting work, the surfaces should be thoroughly cleaned of dust and dirt, and then they should be allowed to dry. The product to be glued must be covered with a thin layer of glue and applied to the second surface. If necessary, you can combine silicone with metal, and the plan of action will be the same. Many types of adhesives will dry at room temperature.

It is best not to use the glued product within 24 hours after work. With uneven seams, it is allowed to separate the surfaces by means of chemicals and re-carry out the work.

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