Profiled Rubber cords

PowerRubber offers a very large selection of profiled rubber cords. They will prove themselves in a variety of conditions due to a wide range of properties. They are most often made of plastics and rubber compounds such as NBR, FKM, silicone or neoprene. The products are available in solid (hard) and soft spongy (with the use of micro rubber). The high quality of products and the precision of workmanship make them suitable for professional use in many industries.

Rubber seals – characteristics of materials

Rubber seals come in a wide range of thicknesses. They are very flexible and pliable, so they can be adapted to seal almost any surface. Interestingly, they are made by the method of continuous vulcanization. As a result, the rope has the same thickness and always the same shape along its entire length. Reputable manufacturers ensure that their rubber products are resistant to mechanical damage and that they have appropriate insulation parameters. This makes them perfect for keeping heat and also prevents the formation of moisture. The sealing cord can be made of many different rubber compounds. Below we present the characteristics of the most popular materials that are commonly used in production. It is worth getting acquainted with their specificity in order to be able to choose the elastomer type best and accurately to your individual needs.

Solid EPDM

It is an abbreviation of the full name of the material, i.e. ethylene propylene diene rubber. This solid rubber material has gained immense popularity and recognition due to its high ozone resistance and low susceptibility to chemical damage. It does not react with acids, detergents, bases, oils, motor lubricants, ketones and alcohols. This material is often used for seals in brake systems. It is highly resistant to water and hot steam. However, it is not a rubber material recommended for contact with oils and petroleum derivatives. The operating temperature range is in this case from -45 degrees Celsius. Celsius to +120 degrees Celsius Celsius.

Sponge EPDM

Rubber material used in rubber cords with a cross section of 2 to 100 mm. It has a slightly narrower working range than the solid version and is from -30 degrees Celsius. Celsius to +120 degrees Celsius Celsius. It belongs to products with a good permanent deformation coefficient after compression, which makes it extremely durable. Sponge rubber is also resistant to hot water and steam, ketones, alkalis, polar solvents and alcohols. This makes it often used in a variety of industries and sectors of industry. One should be especially careful in the case of contact with petroleum products, organic and non-polar solvents, because it has a chance to enter into intense chemical reactions with them.


This is otherwise known as nitrile , i.e. acrylonitrile-butadiene rubber. The attractive price makes it very popular with very good features and parameters. At a low expense, this material has relatively good mechanical properties. It is not prone to permanent deformation and is characterized by low abrasion. Nitrile compounds are much more resistant than most other materials from the elastomer group in terms of permanent deformation. They are also more resistant to tearing. The operating temperature range is from -30 degrees Celsius. Celsius to +120 degrees Celsius Celsius. In most cases, this is more than enough for the industry. The popularity of this material is also due to its high resistance to oil and petroleum products. However, just like any material, nitrile also has its limitations. It is not recommended for contact with ozone (unlike the material discussed above). It has moderate resistance to various activities caused by weather conditions. Nevertheless, in most applications it will fulfill its role as an economic seal. It is a standard product for the hydraulic and pneumatic industries. Price and high quality are the most important advantages of this material.


Rubber silicone products (VMQ) are a very wide selection of silicone sealing products available on the website of our online store, characterized by high quality and hardness from 40ShA to 80ShA. It is available in white, red and black. These are the most frequently chosen options due to their universal use in various spaces. The products are made in compliance with modern, demanding standards of the FDA (Food and Drug Administration, responsible for approving products suitable for contact with food). Therefore, silicone rubber products are also used in the pharmaceutical industry, where the emphasis on sterility and durability is very important. Silicone perfectly meets these conditions. The operating temperature range is from -60 degrees Celsius. Celsius to +200 degrees Celsius. Among other elastomer compounds, silicone used in the production of rubber seals has excellent flexibility and is also a good electrical insulator. It is resistant to oxygen, ozone, sunlight and UV rays. Thanks to these features, it is suitable for food applications at every stage of production and distribution. However, like any material, it also has its drawbacks. It is not recommended to use silicone for dynamic systems. This material also has high gas permeability and is not chemically resistant.


FKM is another rubber material that has a very good resistance to chemical agents. They are distinguished by a wide operating temperature range from -20 degrees Celsius. Celsius to +200 degrees Celsius. Various FKM fluoro seals have relatively low gas permeability. This makes them suitable for sealing in a rather high vacuum environment. Interestingly, it is also a non-flammable material. This material is resistant to mineral oils and greases, and aromatic hydrocarbons. It is not susceptible to acids (including the popular hydrochloric acid, sulfuric, phosphoric, nitric). It does not react chemically with gasoline, diesel oil and engine oils. However, it is not recommended in contact with hot water, steam, polar solvents, and low molecular weight esters.

The use of rubber seals in the form of cords

Rubber products are widely used in many machines and in various industrial installations. Due to their durability and flexibility, they are used, among others, in the construction industry – both on land and in water. They are also often used on vessels. They can often be found in harbors, on wharfs, at ramps, and also at rails. In this case, they play the role of rubber fenders, thanks to which they protect the sides against damage or scratching. Round section rubber seals in the form of ropes are found in hermetically sealed and heated tanks, where various processes are carried out under increased pressure. They are also used in the automotive and automotive industries, as well as in the engineering, electronics and ventilation industries.

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