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Foam rubber: The flexible all-rounder with the velvety feel

H. Schubbe

Foam rubber is a versatile material that we often encounter in everyday life without consciously noticing it. Its soft, velvety surface and high flexibility make it an ideal material for seals, padding and handicrafts. But what exactly is foam rubber? And where is it used?

In this comprehensive guide, you will learn everything you need to know about foam rubber. Discover the many possible uses and find out how you can make the most of the advantages of this fascinating material!



foam rubber round cord
Moosgummi Rundschnüre

What is foam rubber?


Foam rubber is an elastic foam that belongs to the so-called cellular rubbers. It is made from natural rubber or synthetic rubber and is characterized by its open-pored structure. This structure gives the foam rubber its characteristic properties:


  • Softness and flexibility: Foam rubber is very soft and flexible and adapts perfectly to different shapes and surfaces.

  • Lightness: Due to its open-pored structure, foam rubber is very light.

  • Thermal insulation: The air trapped in the pores has an insulating effect and ensures good thermal insulation.

  • Sound insulation: Foam rubber absorbs sound waves and reduces the sound level.

  • Slip resistance: The velvety surface of the foam rubber offers good slip resistance.


Foam rubber is available in different densities, degrees of hardness and colors. Depending on the application, special properties such as flame retardancy, oil resistance or food suitability may be required.


Thermal Properties of Foam Rubber


Foam rubber has good thermal properties. It is temperature-resistant and heat-insulating.


Important thermal properties:


  • Temperature resistance: Foam rubber can generally be used in a temperature range of -30 °C to +70 °C. Special types can also withstand higher temperatures.

  • Thermal conductivity: The open-pored structure of the foam rubber ensures low thermal conductivity and good thermal insulation.

  • Fire behavior: Foam rubber is generally flammable. However, there are also flame-retardant versions.


Mechanical Properties of Foam Rubber


Foam rubber is a soft and flexible material.


Important mechanical properties:


  • Compressive strength: Foam rubber can withstand low compressive loads.

  • Tensile strength: Foam rubber has a low tensile strength.

  • Elasticity: Foam rubber has good resilience and returns to its original shape after deformation.


Acoustic Properties of Foam Rubber


Foam rubber is a good sound insulator. The open-pored structure of the material absorbs sound waves and reduces the sound level.


Important acoustic properties:


  • Sound absorption: Foam rubber absorbs sound waves and reduces the sound level.

  • Vibration dampening: Foam rubber dampens vibrations and reduces the transmission of vibrations.


Frequently used industries


Foam rubber is used in a wide variety of industries.


Examples of industries in which foam rubber is used:


  • Construction: sealing of windows and doors, sound insulation, thermal insulation

  • Automotive: Seals, upholstery, sound insulation in the vehicle interior

  • Packaging industry: padding and protection of sensitive goods

  • Shoe industry: insoles and padding in shoes

  • Sporting goods industry: handles and padding for sports equipment

  • Craft Supplies: Creative Design and Crafting

  • Household: Seals for household appliances, coasters, anti-slip mats


Are you looking for high-quality foam rubber for your company?



Rexio offers you a wide range of foam rubber in different densities, degrees of hardness and colors. Let our experts advise you and find the optimal solution for your requirements!

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