What are the characteristics BF-4 glue and how to use it correctly

Popular adhesive BF-4 is renowned for its powerful bonding abilities and adaptability to a wide range of uses. Due to its widespread usage in both industrial and domestic contexts, this glue is a preferred option for both professionals and do-it-yourselfers. Your projects’ durability and quality can be greatly increased by being aware of its features and using it appropriately.

The remarkable resistance of BF-4 glue to heat, chemicals, and water is one of its most notable qualities. It is therefore perfect for use in situations where other adhesives might not work. BF-4 glue can give you the dependable bond you need, whether you’re working on a project that needs to be highly durable or one that will be exposed to harsh weather.

To achieve the best results, there are a few essential steps in correctly using BF-4 glue. The surfaces that will be bonded should first be cleaned, dried, and free of any debris or grease. Press the surfaces together firmly after applying a thin, even layer of glue to one of the surfaces. It’s critical to factor in enough drying time, which can change based on the humidity and temperature of your workspace. Full strength is usually attained in a day or two.

Another important factor to keep in mind when using BF-4 glue is safety. Wear safety gloves to avoid skin contact and always use it in a well-ventilated area to prevent fume inhalation. In the unlikely event that any glue gets on your skin, wash it off right away with soap and water. You can use BF-4 glue safely and effectively for a variety of applications if you adhere to these instructions.

Characteristic Details
Type BF-4 glue is a phenol-formaldehyde resin-based adhesive.
Properties It is known for its high strength, heat resistance, and water resistance.
Uses Ideal for bonding metals, ceramics, wood, and various composites.
Application Apply a thin layer to clean surfaces, press together, and allow to cure.
Curing Time Typically requires 24 hours to achieve full strength.
Safety Use in a well-ventilated area and wear protective gloves.


The primary ingredient in BF glue is polyvinyl acetal or polyvinyl butiral. In addition to indicating the percentage of the primary component in dry matter, the number "4" also describes the seam’s elasticity following drying. The strength of the connection itself decreases with increasing allowable bend indicator.

Ethyl alcohol as a solvent can be added to the mixture in addition to polyvinylButiral and polyvinlacetal, phenol-formaldehyde, or phenolivinyl acetate resins. Chloroform or regular, cleaned acetone can be used in place of the final component. Since glue is flammable, work should be done away from sources of sparks and fire.

Areas of application of glue BF-4

When working with skin, wood, glass, metal (copper, aluminum, steel), plastic, ceramics, and ebonite, it is important to use BF-4 brand glue. This is the most effective way to fix items that can be bent, struck, or vibrated. High strength makes it possible to join surfaces with various textures.

Its composition is all-encompassing. It can be applied in daily life in addition to:

  • in aircraft industry, astronautics;
  • in woodworking, paint and varnish industries;
  • when decorating ceramic, glass products;
  • in medicine;
  • in the work of a hundred;
  • in electronics, instrumentation;
  • in textile industry and shipbuilding;
  • in the chemical industry and energy;
  • in the oil and gas, metallurgical industry.

The instrument is acceptable for components that are heated to low temperatures and alkali. It’s possible to operate electrical equipment and devices thanks to electroinsulating qualities.


The finished seam holds up well against salt mist. Technical specifications are in line with GOST 12172-74.

Index Technical description
The degree of viscosity (measured by the viscimeter ZV-1) 30-60 s
Part of the dry residue 10-13%
The strength of the strength when trying to move 19.6 MPa (200 kgf/sq.cm)
The permissible bend of the seam after completely drying out no more than 1 mm
1 m2 consumption 150-200 g
Risk of cracking after complete drying absent
Corrosion activity when working with metals absent

Properties remain intact when exposed to a temperature range of +20 to +25 degrees Celsius.

The hot application technique produces a strong, long-lasting glue result. The seam itself is still flammability even after it has not decayed.

Instructions for use

It is essential to thoroughly clean the surfaces of any remaining dust, fat, or old glue before beginning any work. They are fucked, cleaned, and degreased in order to accomplish this.

The method used to apply the seams itself determines how the product should be used.

  • hotly;
  • cold.

Apply an even layer of composition to glued surfaces using a hot method, then let it sit for an hour. The next step is to make the connections and bring the details together. For forty minutes, the effects of high temperatures (roughly +150–+170 O C) must be guaranteed. Cooling should occur gradually. It just needs to remain indoors at room temperature.

In order to glue textile parts, it is necessary to slightly wet and squeeze the fabric first. After that, everything is covered with a thin layer of glue and given a full hour to cure. The fabrics cannot then be joined together, squeezed, or heated ironed on top. The product can be used within five to six hours of its release.

Using the cold glue technique Two layers of the product are applied, separated by twenty to twenty-five minutes. Additionally, the surfaces need to be firmly compressed together. The details need to be left alone for at least a day in order to completely dry. The space needs to be well-ventilated and warm. Using a brush to apply a tool is preferable. The packaging instructions state that 1m2 consumption. Alcohol works well if you need to remove any last bits of glue from the surface. It is crucial that the glue does not have time to dry completely on its own. We re-wipe the surface after 15 to 20 minutes.

Safety precautions

Glue-filled closed containers are kept in different rooms, away from heat sources, sparks, and fire. The work involving part repair and gluing is done outside of the fire. The composition’s easy ignorance of the solvents explains this. To transport the cargo, adherence to the guide is required during transportation.

Are there any analogues

There isn’t a complete technical and compositional equivalent for the BF-4.

Super-chain brand glue, which consistently adheres to all surfaces save metal, can be used in its place if needed. It is more difficult to work with if you select manufacturers of epoxy mixtures. The BF-4 is comparable to all potential counterparts in terms of features and the dependability of the completed suture.


Eight months from the date of production is the guaranteed shelf life. To avoid abrupt temperature swings, it is imperative to check the container’s total tightness. There shouldn’t be more than +25 about C in the room.


The price is determined by how much glue is needed. It can be 2, 4, 8, or 45 kg in the standard version. One kilogramme (or one-liter banks) of BF-4 costs roughly 650 rubles.

BF-4 glue is a well-liked option for a variety of applications due to its remarkable bonding strength and adaptability. Its main qualities are its extreme durability, chemical and moisture resistance, and its ability to stick to a variety of surfaces, including ceramics, metal, and wood. Because of these characteristics, BF-4 is a great choice for DIY and industrial projects.

To achieve the best results when using BF-4 glue, there are a few crucial steps that must be taken. Make sure the surfaces to be bonded are dust- and grease-free, clean, and dry before starting. This is an essential step in building a solid relationship. After that, equally spread the glue over both surfaces and firmly press them together. Give the glue enough time to cure; this could take different amounts of time based on the materials and surroundings.

Prioritizing safety is crucial when handling BF-4 glue. To prevent skin and eye contact, use it in a well-ventilated area and wear safety goggles and gloves as protective gear. To preserve the glue’s efficacy for later use, store it properly in a cool, dry location.

To sum up, BF-4 glue is a dependable adhesive that has many advantageous qualities and can be used for a variety of purposes. You can create strong, long-lasting bonds and ensure the success and durability of your projects by following the correct usage guidelines and safety precautions.

The adaptable BF-4 glue is renowned for its powerful bonding properties as well as its resistance to a range of chemicals and high temperatures. It’s perfect for industrial applications, such as bonding metal, wood, and ceramics, because it works well in harsh environments. Make sure the surfaces are clean and dry before applying a thin, even layer of BF-4 glue and pressing the surfaces firmly together. To get the greatest results, give the curing process enough time. The longevity and efficacy of the glue are contingent upon appropriate handling and storage practices.

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Daria Yakovlev

Interior designer, author of online color design courses. I will help you create a harmonious interior using color.

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