Rubber Seal

Typically, rubber seals are used to attach or seal two systems or machines to each other. Rubber seals are used to prevent fluid leakage from a mechanism or device and have a ring-shaped structure.

 Rubber seals are widely used in industrial applications for various purposes and structures that are constantly moving equipment, just like any rotary shaft or cylinders and reciprocating shafts, which are an important part of hydraulic or pneumatic systems, including You can refer to the seals that are used for the car window. Seals can also be made using natural rubber and synthetic rubber.

Various Types of Rubber Used in Making Rubber Seals

• Types of Natural Rubber
• Synthetic Nitrile Rubber
• Synthetic Chlorosulfonated Polyethylene (CSM)
• Synthetic Fluoroelastomers (FKM)/ Viton
• Synthetic Butyl Rubber
• Synthetic Silicone Rubber
• Synthetic Styrene Butadiene Rubber

Different types of rubber seals

Oil Seal

This type of seals, which is one of the most common types of industrial seals, is used to keep oil or other lubricants in rotary applications so as to keep oil in these structures out of leakage and after Preventing them.

 This type of seals has a flexible lip that rub against the shaft or housing during movement and rotation to prevent leakage of oil by providing a tight seal.

Mechanical Seal

Mechanical seals should be used for rotary structures and shafts used in mechanical industries that require high pressure, high temperature and high speed. This type of seals is used for prohibit leakage of oil in many high-turning equipment, such as pumps, mixers, agitators, sieves and cryogenic seals.

Rubber O-Ring

This type of rubber seal is a ring-shaped, seamless ring that is made from an elastomeric synthetic rubber material.

 Usually, the o rings seals are made of a circular shape, but sometimes between these seals are hollow and sometimes solid. The o rings can be used in many mechanical applications as secondary seal and have many applications.

Balanced Seal

This type of seals is used to reduce the effects of hydraulic pressure in the compartment that is seal applied.

Bellows Seal

This seals are used as a secondary seal and spring loading, and is usually designed as a formed or welded bellows.

Bidirectional pressure Seal

This type of seal is used for areas that are pressurized uniformly in both directions. These types of seals are sometimes also called double balancing seals or reversible balanced seal.

Dynamic Seal

This type of seal is used to prevent leakage of past components of a proper structure when its components are in relative motion.

Lip Seal

This type of seal is high-performance seal that is used multipurpose and generally used for uniform and low-pressure sealing.

Rubber Piston Seal

This type of seals has specified engravings that is suitable for better grip.

Rubber Hydraulic Seal

The hydraulic seal is designed for use in equipment with high pressure dynamic applications and is generally exposed to hydraulic fluids.

Rubber U Seal

This rubber seal has a symmetrical lip-shaped structure and features with seal-edged chamfered and is used as one of the main components in hydraulic and pneumatic systems.

Rubber V Seal

This Rubber V Form Seal, which is used firmly against the middle section, is generally used axially for shafts and bearings. It’s very versatile of its high reliability with dust, water and oil splashes and other media.

Wiper Seal

This type of seal is known for sewage cleaners because it prevents dust, dirt and other external contaminants from entering. This Wiper seal is very suitable for long life of equipment.

Types of Applications of rubber seals in various industries

Rubber Seals have many applications in different industries. Some of the most important industries that use rubber seals include:

• Medical and Pharmaceutical Industry
• Waste disposal industry
• Aerospace Industries
• Marine industries
• Food and chemical processing industries
• The automotive industry
• military industries
• Nuclear Industries
• Industries and factories related to paper and pulp

All equipment that uses pumps, valves, mechanical seals, hydraulic and pneumatic cylinders, filters, actuators, motors, engine, lubrication systems, etc., has used skidding in their own structure.

Our task is to supply and design various types of rubber seals. All the factories and manufacturers who need large quantities of rubber seals, automobile rubber seals, rubber seal strip, hatch cover rubber seal, synthetic rubber seal, rubber o ring and other types of rubber products can either by phone or online request Give our experts an instant contact with them as an essential supplier of these parts and to meet your needs.

Natural Rubber

Did you know that about a quarter of the world’s rubber are produced from natural resources, while other types are manmade or synthetic rubber produced from petroleum? Natural rubber is a commodity or vital product produced in agriculture, which is used in the production of many functional products.

 The role of rubber in the socio-economic fabric of many developed and semi-developed countries is very important. Now more than 20 million families have the main activities of planting rubber and live in this way.

What is Natural Rubber?

Some trees, especially trees that belong to the family of Hevea and Ficus trees, produce an elastic substance from their latex sap, that is made of natural rubber from this elastic. In fact, natural rubber should be an elastomer or elastic hydrocarbon polymer.

 This type of rubber is actually a type of rubber that contains inside itself rubber vulcanized rubber that is finished in many rubber products.

 Natural rubber is also known by other names, including Indian rubber, Gum Elastic, or caoutchouc rubber. 

How Are Natural Rubber Made?

The sap of rubber trees are the main source of natural rubber production. In order to collect the latex rubber, the stings are regularly tapped. Then the shear is created on the surface of the bark of the tree, and the latex juice that is beneath it is collected in containers such as cups.

 This sap is not useable at first, so it first purifies it to make it usable rubber. After that, acid is added to this latex to produce a sap that is used to some produce like jelly products. After that the latex jelly is made in this way, they should be flattened and hanged to dry.

In 1839 Charles Goodyear unveiled a new method for the production of natural rubber, which made the rubber produced more robust, stronger and flexible. What he invented was the vulcanization of rubber. The main problem with natural rubber was that they were sticky, they became deformed during warming and were very fragile when cold, and they did not have good quality and tensile strength.

 With these conditions, these rubbers could not be used to produce rubber products that have good quality and tensile strength.

 By using the natural rubber vulcanization method, the polymeric structure of the rubber chains and cannot moving separately. With this method, although in the course of heat or any other stress, the natural rubber deformed temporarily, but when the stress was removed, the rubber again returned to its natural state.

Natural Rubber Resources

Although the main source of natural rubber production is the tree with name Hevea brasiliensis, which is a tropical tree, yet natural rubber can be obtained from hundreds of other plant species.

 These types of trees are usually grown in areas where the annual rainfall in these areas is less than 2000 mm and the air temperature is not more than 28 degrees or less than 21 degrees. With this in mind, with the fact that the natural rubber tufts of high altitude, about 600 meters, can be easily understood that the main hometown of these trees is about 10 degrees on both sides of the equator.

 However, in other parts of the world, these trees are also cultivated, among which the most important of these areas are the north of China, Mexico and Guatemala.

Sir Henry Wickham In 1876, collected about 70000 seeds of different rubber trees from Brazil. After these seeds germinated, they were taken to East of Indies, where they caused the area to be known today as one of the poles of rubber plantations.

 Though today, 90 percent of the world’s natural rubber is produced by Malaysia, Indonesia and Thailand.

 In Africa, the Philippines and Europe, planting the rubber tree began to compensate for the shortage of natural rubber produced from Indonesia. 

Natural Rubber Industry

Despite the advent of artificial, abnormal and manmade rubber, natural rubber has grown over the last 100 years.

 Natural rubber industries have been in the field of research and development over many years in various industrial fields such as agriculture, physics, breeding to improve productivity and performance, and chemistry and technologies, along with many other applications in order to help and expand plethora of applications.

 You can also read more details on our website for a better understanding of the natural rubber industry.

Products made of natural rubber.

Many natural rubber products, such as tire types, engineering components, and many latex products that are used to produce essential crops in the fight against AIDS and other diseases, are of great importance in modern day life.

 Natural rubbers, such as synthetic rubbers, are produced in varying degrees and levels. Latex and rubber solid are the main indicators of differentiating and grading natural rubber types.

We said that latex is a kind of liquid which comes from some types of trees, and the type of tree affects its quality. But the Solid grades of the rubber depends on the manufacturer or the rubber case.

 Products manufactured by natural rubber have a wide range of products, some of the most important of these products are gloves, balloons, tubes, condoms and more.

   

Natural Rubber Key Features

Natural rubbers have unique characteristics and features, among which the most important ones are:

• Natural rubber has high resistance to tensile and tear and is extremely resistant to fatigue.
• Natural rubber is very easily stick to itself and other materials, which makes it easier to manufacture rubber products and fabricate with this type of rubber.
• One of the bugs in the natural rubber is the average resistance of these types of rubbers to environmental damage such as heat, light, ozone and so on.
• Natural rubber tires are very well bonded to brass-plated steel cord, which makes these types of rubbers ideal for tire production.
• The low level of hysteresis in this type of rubber produces low heat, which is very effective in maintaining the integrity and integrity of the new generation tires as well as their repairs.
• Natural rubber has little resistance to rotation, which reduces fuel consumption
• Natural rubber is resistant to tearing, slitting and cutting.

Uses of Natural rubber

 

• Natural rubber is a great barrier to water penetration
• Natural rubber seems to be the best barrier to dealing with pathogens such as the AIDS (HIV)virus. For this reason, these types of rubber are the best type of rubber for the production of condoms, surgical and medical wristbands.
• Natural rubber is an excellent elastic or springy rubber
• Natural Latex Rubber is the best material for producing all kinds of catheters, balloons, elastic materials, medical tubes and some types of adhesives.
• Apart from rayon, this material can be considered the only natural substance used in the automotive industry.
• Another product is Rubberwood Rubber, which is being added every day to its range and production. Rubberwood is a natural charcoal for local cooking.

Natural Rubber Consumption

Natural rubber consumption patterns have changed in recent years, especially in North America, Western Europe and even East Asia.

 The countries of Malaysia, Thailand and Indonesia, which are the largest natural rubber producers in the world, today have become one of the most rubber consuming countries in the world. However, there are also potential for absorption of natural rubber in eastern European countries. India, Brazil and China are taking all the natural rubbers produced in their own country.

Thailand, followed by Indonesia, Malaysia, India, China, Vietnam, Sri Lanka and some other countries, respectively, are the largest natural rubber producers in the world.

 These countries are located in the geographic area, which are 5 to 15 degrees north or south of the equator, and therefore have the best conditions for producing natural rubber. According to the 2001 annual report, more than 6.5 million tons of natural rubber is produced in the world.

Nitrile Rubber (NBR)

Nitrile rubber is referred to as a rubber that is produced using a polymerization of acrylonitrile with butadiene and in the family of synthetic rubber.

 This type of rubber is usually abbreviated as NBR, but it is commonly known in the world as acrylonitrile-butadiene rubber, acrylonitrile rubber nitrile-butadiene rubber, as well as NR rubber.

 These rubbers are used in the production of many utilities and equipment or applications. In principle, nitrile rubber is produced at many rubber manufacturing units, which is why industrial nitrile rubber is one of the best types of synthetic rubber in the world.

According to statistics released in 2005, NBR rubber has about 368,000 metric tons annually, and is projected to reach 645,000 tons by the end of 2017 for nickel butadiene rubber.   

What is Nitrile Rubber (NBR)?

NBR rubber or nitrile rubber, is a desirable rubber of high quality synthetic quality, made of copolymer of acrylonitrile (ACN) and butadiene. This type of rubber is known with chemical name as the acrylonitrile-butadiene copolymer.

 The high resistance to aliphatic hydrocarbon oils and fuels make this type of synthetic rubber in the ranks of the most important types of synthetic rubber. Although, these rubbers are produced in varying degrees depending on manufacturers and suppliers, and they are available on the market.

 The more acrylonitrile (ACN) is used in the production of nitrile rubber, the hardness and resistance of the rubber will increase against oil, but in the face of temperature and heat will be less flexible.

Nitrile synthetic rubber properties

 

NBR rubber has a very good resilience and a lot of wear resistance. This type of rubber has shown a modest ability to weathering and low aromatic oils resistance. Typically, nitrile rubber can be used well up to a temperature of -30 ° C, but some special and higher NBR levels have the ability to be used at lower temperatures too. Below are some of the important features of the Nitrile Synthetic Rubber:

• Nitrile rubber Types of synthetic rubber belong to the family of acrylonitrile and butadiene unsaturated copolymers
• Different polymer combinations of acrylonitrile determine the chemical and physical properties of nitrile rubber.
• Nitrile synthetic rubbers are produced in varying degrees. In this regard, the higher the amount of acrylonitrile inside the polymer in rubber production, the better its resistance to the oil.
• Good resistance to chemicals and fuels
• Ability to withstand different temperatures depending on their composition
• It’s less flexible and less restrictive than natural rubber
• This type of rubber is also good against aliphatic hydrocarbons
• Nitrile or NBR rubbers do not have very high resistance to ozone, aromatic hydrocarbons, ketones, esters and aldehydes.
• Although they have a lot of elasticity and weariness, they have a moderate resistance.
• There is little resistance to weathering
• Nitrile rubber can be used up to -30 ° C degrees, but for lower temperatures, it should be used with more special versions.

Nitrile rubber use cases

nitrile Synthetic rubber or NBR are commonly used in industrial and automotive products, especially as workhorse of the rubber products.

 If a suitable elastomer is selected with the appropriate acrylonitrile content compatible with other materials, NBR rubber or nitrile can be used in many applications and production areas requiring oil, fuel, chemicals and etc.

 industries. In the automotive industry, NBR tires use water, hoses, seals and liquid drums to produce water. Due to the ability of nitrile rubber to tolerate a temperature range of -40 C to +125 C, this type of rubber is one of the best types of synthetic rubber in the production of automotive rubber.

 Also, because of the flexibility and resilience of these types of rubbers, they can be used as optimum rubber for the preparation of disposable laboratory equipment, cleaning tools. Examination briefcases.

Industrial use of NBR rubber or nitrile rubber

Nitrile rubber is widely used in the production of industrial equipment and goods, some of which are:

• Production of roll coating
• Production of various types of hydraulic hoses
• Conveyor belt production
• Types of products in the field of graphic arts
• Packaging items in oilfields
• Production of sealing equipment for all types of home appliance as well as plumbing types
• The use of injection dosing or transferring products is molded
• Manufacture of tubes or extruded hoses
• The production of Calendered sheet goods and industrial flooring mats in the form of glossy coated sheets
• Production of various sponge goods

CSM or Chlorosulfonated Polyethylene / Hypalon

CSM Rubber

Artificial rubber made using polyethylene are called CSM or Chlorosulfonated polyethylene. This type of rubber is made using Neoprene Polychloroprene material and some other materials.

These types of rubber can be used in a variety of conditions, and they can withstand up to 130 degrees Celsius and can be used sequentially. One of the reasons for the popularity and popularity of Chlorosulfonated Polyethylene (CSM) rubbers is the excellent resistance and durability of these types of rubbers for different atmospheric conditions, as well as high resistance to chemicals. Chlorosulfonated polyethylene rubbers are used in many industrial applications, and are also used in cars with high performance and weather with extreme conditions.

 Other applications of chlorosulfonated polyethylene rubbers are the production of various types of rubber linings, hoses, seals, and industrial and semi-industrial washers.

Hypalon

CSM is known by a trademark called Hypalon. Hypalon was first developed in 1951, but then followed by chlorosulfonated polyethylene as its usual name. One of DuPont’s subsidiaries, DuPont Performance Elastomers, was the manufacturer of this kinds of rubber at first.

 Though Hypalon are produced by other companies with their own unique brand names. The main characteristics of the Hypalon are always durable and their high stability is difficult in the harsh environmental conditions. For this reason, this type of rubber has its reputation for high performance and high resistance to chemicals, ultra high temperature and ultraviolet lights.

The main characteristics of CSM or Chlorosulfonated Polyethylene or Hypalon

• CSM rubbers against ozone, oxygen, chemical and water often have very high and guaranteed resistance.
• Their resistance to fuel is poor
• They have a small compression set resistance and therefore have limited application in dynamic seal.
• They have high resistance to weather types
• Abrasions resistant is high

Various applications of Chlorosulfonated Polyethylene

Many functional accessories are produced using CSM, and they are also used to produce many types of products.

 Although not all of these can be mentioned, some of the most important products and applications that are made using Hypalon or chlorosulfonated polyethylene are:

• CSM is used in the construction industry to make all kinds of sheets and coatings, roof membranes and portable water tanks and liners.
• The CSM is used in the automotive industry to make all kinds of interior hoses, pipes, belts and other fittings. In addition, high-temperature timing belt and strong steering wheel are also made from automotive parts made using CSM.
• In the wiring and cable industry, for the manufacture of molds, the adhesive coatings are used from CSM. Insulated wires and cables are mainly made of CSM because of their excellent resistance to heat and pressure.
• In the production of industrial products, CSM has a colorful role as well because of the variety of hoses, rolls, seals, industrial diaphragms, coatings for preservatives or chemical products, and many other industrial and functional equipment made using chlorosulfonated polyethylene Because resistance is important to them.
• Other products that using CSM include a variety of rubber flooring, industrial and flexible tubes, a variety of magnetic tapes, protective coatings and many decorative products.

FKM or Fluoroelastomers / FKM Viton

What is FKM?

Typical rubber that designed and manufactured to withstand high temperatures are called Fluroelastomer or FKM rubber.

 FKM is one of the best types of steaks for resistance to chemicals, heat and oil, due to the compatibility and extraordinary structure of this type of rubber. These rubbers provide a lifetime of up to 200 ° C for products. The FKM should not known as a single-unit structure, but this type of rubber is in fact a group of fluoropolymer rubbers, which is why they are sometimes known as FKM Viton. FKM rubbers can be classified according to their fluoride content.

 Therefore, FKM is either 66% or 68% or 70%. The more FKM fluoride rubber in its contents, the more resistant to fluids from higher fluoride levels.

FKM Viton

The registered trademark for fluroelastomer rubbers, produced by DuPont Performance Elastomers L.L.C, is Viton.

 Initially, this kind of rubber was unveiled in 1957 in line with the requirements of the aerospace industry for an extremely high elastomer.

 The high quality and versatility of the Viton rubber makes this type of rubber very soon available in other industries such as automotive, home appliances and the chemical industry as a high resistance to fluid.

 Viton, more often known as the FKM or fluroelastomer these days, is most famous for its extremely high heat resistance, as well as its excellent strength and endurance against aggressive fuels and chemicals. FKM Viton fluroelastomer rubbers also hold the ISO 9000 standard in quality management and ISO / TS 16949 in the automotive industry.

 Read more about the best fluorescence fluorescens.

FKM or Fluoroelastomers in sealing

FKM uses and functions

We sell types of products based on Fluoroelastomers or FKM tires with the Viton brand directly and directly from our own FKM rubber manufacturers, widespread directors and rubber suppliers.

You can apply to us on request for a variety of FKM tires with the Viton brand or any other brand, and even for the purchase and purchase of FFFM rubber products, FKM rubber products and other types of synthetic tires. Get a quick delivery of the actual fluoreelastomers rubber suppliers.

The main attributes of Fluoroelastomers or FKM tires

• FKMs are not easily oxidized and are resistant to acid, fuel, and chemical attack.
• FKMs has high oil resistance
• This type of rubber comes with water steam, methanol, hot water and many kinds of polar fluids
• Fluoroelastomers have a remarkable resistance to heat and oil due to the high percentage of fluorine to hydrogen, and this type of carbonate has good carbon-fluorine bond strength as well as absence of unsaturation.

Applications of FKM rubbers

The use of FKM rubbers ensures consumer confidence even in the toughest environmental conditions. Some applications of this type of rubber can be found in the following industries:

• Use of FKM in aerospace industry: Many rubber parts used in the aerospace industry, such as O-ring seals in fuels, lubricants, Fuel hoses, Joints, Valve stem seals, Valve liners, Fuel Injector O-rings, Flue duct exp, Roll covers, Sheet stock/cut gaskets , In tank and quick connect and etc are made with FKM rubbers.
• Use of FKM in the automotive industry: FKM rubbers are used to produce various types of Shaft seals, Tire valve stem seals, Check valve balls, Lathe cut gaskets, Clips for jet engines, Diaphragms, Electrical connectors, Military flare binders and etc, in automotive and related industries.
• The use of FKM rubber in the industry: FKM tires are also used in the industry to produce a variety of Hydraulic o-ring seals and hydraulic systems, Gaskets, Firewall seals, Engine lube siphon hose fuel system seals, Manifold gaskets, Fuel tank bladders and etc.

   

Conclusion
FKM or Fluoroelastomers are great value for use in various industries. This type of rubber is one of the most standard rubbers in the world due to high levels of resistance to various types of chemicals, oil and heat.

The use of FKM rubbers in the aerospace industry, automotive and petrochemical industries has become increasingly popular these days, and are used to produce many products such as seals, rings and hoses, and so on.

Butyl Rubber (IIR)

The Isobutylene-Isoprene copolymer, which is known as the chemical name of butyl rubber, is essentially a copolymer made from isobutylene and much less amount of isoprene, and someone also known as polyisobutylene.

 The commercial manufacture of this type of rubber took place for the first time in 1943. Although it had a smaller market share than a large number of polyisobutylene stocks in the market, but the results showed that butyl rubber had a high initial quality in terms of impermeability or air holding, and showed high flexibility.

For the first time, butyl rubber was used mainly for the production of rubber inner tubes, and still generates a large share of the rubber tubes market with this type of rubber.

Prepare and vulcanize butyl rubber for different purposes

To be able to use butyl rubber for many purposes, this type of rubber must first be compounded and then vulcanized to make the rubber resistant and durable, and of course useful for the desired purpose.

This is also true for all types of tires. For specific processes and property needs, butyl rubber must be developed and upgraded to the desired grade at different stages, and this will be prepared for different requirements, resulting in a wide range of butyl rubber with different molecular weight, unsaturation and different applications are prepared and presented at commercial levels.

 In this process, both the final product characteristics and the rubber preparation stages are very important in determining the degree of butyl rubber for use in specific applications.

 The use of quality fillers, stabilizers, as well as the tools used for processing and manufacturing, and the selection and use of suitable materials, play a vital role in the production, quality and final performance of butyl rubber.

Main Specifications of Butyl Tires

• Better Flexibility
• have Low glass transition temperature
• Better and more effective ozone resistance
• Have higher damping when exposed to ambient temperatures
• Suitable ozone resistance
• Very good resistance to various chemicals weather and heat situation and weather
• Acceptable vibration dampers
• Having biocompatibility

Silicone Rubber (Si Rubber)

The most commonly used synthetic or polymer-based rubber are silicon rubber, which is also known as Si Rubber. The bonding structure of this type of rubber is similar to that of glass, stone and quartz structures. Silicone rubber is a synthetic rubber that is made using silicon, which is a kind of polymer, and is also combined with hydrogen, carbon and oxygen.

 The structure of this type of rubber is very unique, in a form that is bonded to a polymer and is reinforced with silica.

 Due to the unique structure of silicon rubber, many applications in various industries require high quality rubbers because the silicone rubber structure is in such a way that it has created a perfect balance between mechanical and chemical properties, something that in today’s different industries, it was very felt and demanded.

Properties of Silicone Rubber

Silicone rubber is one of the most advanced synthetic rubber in the market, which is made up of inorganic and organic features.

 Due to the type of structure and compounds used in the production of this type of rubber, silicon rubber can be considered a multi-purpose rubber, which has advantages that are not seen in other types of synthetic rubbers.

 Some of the features and benefits of this rubber are the benefits of electronic silicon rubber, excellent chemical resistance, good flame retardant resistance and excellent resistance to extreme heat and cold.

Therefore, the following Properties and specifications are generally available for silicon rubbers:

• Silicone rubber is a good electronic insulation, which is why the high resistance of this type to high temperature and chemical stability.
• Silicone rubber has a high flexibility, elasticity and compression capability and, ultimately, a good resistance to cold temperatures.
• Silicone rubber is tremendously resilient to the wide range of temperature and resilience that resist extreme temperatures from minus 100°F degrees to 500 degrees Fahrenheit.

 Silicon rubber can easily be used at a temperature of 150 ° C without any change in the properties of silicon rubber. Accordingly, the resistance of this type of rubber can be as high as 10,000 hours or more at 100 ° C. Even based on tests, some types of silicone rubber can be used for a short time in areas with a temperature of around 350 degrees Celsius.

• The resistance of high-temperature silicon rubber to oil is great. Although among other synthetic rubbers, nitrile rubber and chloroprene rubbers have a relatively high resistance to oil at temperatures below 100 ° C, but at higher temperatures, no type of rubber has the same strength as silicone rubber to oil resistance.
• Other characteristics of silicone rubber are the extreme resistance of this type of rubber against weather. Even the Ozone created by corona discharge can not affect the silicone rubber.

 Therefore, easily and without concern, silicon rubber can be used in rainy areas, exposed to wind, in the sun’s rays of UV or any other weather conditions for long periods without changing the physical properties of silicone rubber

• Another distinguishing feature of silicone rubber is the strength of this type of rubber in its elongation, tensile strength, tear strength, high flexibility and compact compression, which makes this type of rubber more superior to other types of conventional rubbers.

Under normal conditions of rubber Silicon has a tear strength of 9.8K/m. Although some of the more powerful types of silicone rubber have the ability to withstand the tear resistance 29.4K/m and 49.0 KN/m due to the modified polymer type used in the structure of these rubbers as well as the excellent selection of fillers and cross-linking other rubbers.

• In comparison to other synthetic rubbers, the thermal conductivity of silicon rubber is much higher. For this reason, silicon rubber is used to produce thermal interface sheets and hot rollers
• The resistance of silicone rubber to the highest level is possible with respect to water vapor and moisture. You can easily put silicon rubber in cold water, hot water or boiling water for a long time so that the rubber is immersed in it without any changes and with only about 1% water absorption.

 More interestingly, no mechanical or electronic effects can affect this rubber. At the time of contact with normal pressure steam silicone rubber, you will not see any deformation or deterioration in silicone rubber.

 But if the rubber is exposed to high pressure steam at temperatures above 150 ° C, the silicon polymer used in the rubber will be degraded and the properties of the silicon rubber will be reduced

• Silicon rubber has a metal detectable property
• This type of rubber glows in the dark
• Silicone rubber has electronic conductivity
• Silicone rubber is also extremely resistant to oil, but also to a variety of chemicals, acids and gases
• This kind of rubber resists flame and smoke slightly.

 

Silicone Rubber Applications

• Silicone rubber can easily be extruded into tubes, tubes, strips, solid wires or any other profile due to its high capabilities.
• Silicone rubbers can be transformed into molded of any shape and design
• Silicone rubbers can be used as molds for poured, brush, or spray on a variety of designs.
• This type of rubber can be used for cast molding with low melting temperature, such as lead, pewter, tin and bitumen.
• Silicone rubber is a good option for use as a resin production mold.

The most important Advantages of Silicone Rubber

Although the abilities and advantages of silicon rubber are very high due to its high physical, mechanical and thermal properties, this type of rubber can be used in many applications, but the main advantages of these types of rubbers can be described as follows:

• Stability and high resistance to high temperature and low temperature
• It does not have any taste or smell and has an inertness.
• It is Translucent and easily takes color
• There is a wide range of hardness
• It is very resistant to chemicals
• Strong resistance to weather conditions
• The sealing function is very good
• High electronic properties
• A great option for adjusting the compression strength.

The main disadvantages of synthetic rubber silicon

Although many properties and benefits can be considered for synthetic silicon rubber, these properties make these rubber applications in many industries, but some of the disadvantages are also included in these rubbers, of which the most important ones are To the following:

• Silicone rubbers have a high cost and ultimately a lot of buying prices.
• Silicone rubber is sensitive to certain substances materials, such as sulfur clay, which will make this a property far from curing, although we know silicon rubber as a rubber cure inhibition, but this claim with this condition is slightly overshadowed.
• This type of rubber has a very high viscosity, which makes it very thick.
• In order to prevent the formation of bubbles before the time of pouring, we must try to vacuum degassed

Different forms of silicone rubber

In general, silicone rubber can be classified in the following categories:

• Compounds: These types of rubbers are in ready-to-use forms that can be pigmented and catalyzed for the final application or processing equipment.

• Bases: This type of silicone polymers material contains reinforcement fillers that can be combined with additives and pigments to provide color combinations or any other need for production.
• Liquid silicone rubber (LSR): This type of material can be converted into a suitable injection molding machine and used to produce rubber parts made from heat cure.
• Fluorosilicone rubber compounds and bases Although these types of materials have many key properties and characteristics of silicon, they also have superior properties, such as chemical, fuel and oil resistance.

Styrene Butadiene Rubber (SBR)

During the First World War and the Second World War, due to the lack of natural rubber, a lot of research was carried out on synthetic rubber by the United States and Europe, resulting in the emergence and release of Styrene butadiene rubber (SBR).

 For the first time in 1929 a German chemist with a series of Develop synthetic elastomers by using copolymerization of both the composition of styrene and butadiene in the presence of a catalyst. The first thing to do was to allow styrene and butadiene to react to each other.

 These rubbers have been modified and improved over the years, and new synthetic rubbers are produced with about 25% of styrene and their rest form is butadiene, which has many common properties with natural rubber.

 Styrene Butadiene Rubber have the highest volume of synthetic rubber production in the world and are the most common type of synthetic rubber.  

Properties of Styrene Butadiene Rubber

• This type of rubber is usually very weak unless reinforcing fillers are incorporated. With suitable fillers, this becomes a strong rubber.
• It has similar chemical and physical properties like natural rubber.
• It has better abrasion resistance.
• It has poorer fatigue resistance.
• Heat resistance is better than natural rubber.
• Low temperature flexibility and tensile strength are less than that of natural rubber.

Typically, these types of rubbers are classified in the category of not so strong rubbers. Therefore, in order to strengthen this rubber, a reinforcing fillers must be added. By adding suitable fillers, styrene butadiene rubber can be made of a strong rubber.

• In terms of chemical and physical resistance, this rubber has the same characteristics as natural rubber
• It has a relatively good resistance to abrasion
• There is not much resistance to erosion and fatigue
• Against heat, it has better resistance than natural rubber
• In terms of temperature, it does not have the flexibility and tensile strength and is weaker than natural rubber in this regard.

Types of Uses of Styrene Butadiene Rubber in Different Industries

styrene butadiene rubber has been used extensively in synthetic rubber in the industry. With the increasing growth of the automotive industry, demand for rubber has also increased significantly.

 For this reason, many experiments and attempts were made to produce synthetic or man-made rubber. Despite the production of synthetic rubber, the first type of synthetic rubber was not comparable to natural rubber. But efforts continued until 14 types of synthetic rubber were made that had properties comparable to those of natural rubber and were, in some respects, superior.

 styrene butadiene rubber or SBR is one of the many types of rubber that could be the most common and cheapest type of synthetic rubber used in the industry, which was consistent with the principles of production. This rubber is used as rubber-like rubber in many products and industries.

 SBR rubbers are used to manufacture various types of hoses and many other products. One of the most commonly used areas of SBR rubber is the use of this rubber for tire production, with resistance tires and tread rubber also being produced.

 At present, 76% of global tire consumption comes from this type of synthetic rubber. Other uses of SBR rubbers in the industry include the use of these rubber in the mechanical, automotive, and other industries, including adhesives, floor tiles, shoe soles, and so on.

It is also used in the manufacture of adhesives and chewing gum in the rubber industry, and is known for growing consumption and markets of styrene-butadiene rubber.