Round cords are simple but incredibly versatile profiles that are used in countless applications. Whether as seals, buffers, spacers or design elements - round cords impress with their flexibility, adaptability and their wide range of materials.
In this comprehensive guide, we delve deep into the world of round cords . Find out everything about their properties, areas of application and the diverse possibilities that Rexio® offers you. Discover the right round cords for your individual requirements and let yourself be surprised by these inconspicuous all-rounders!
What are round cords? – Simple geometry, big impact
A round cord is, as the name suggests, a profile with a round cross-section. Their simple geometry makes them incredibly flexible and adaptable. They are made from different materials, depending on the application and the desired properties.
Typical materials for round cords:
Silicone: Heat resistant, flexible, food safe,
EPDM: Weather resistant, ozone resistant,
TPE: Flexible, stretchable,
PVC: Cost-effective, robust,
Foam: Soft, cushioning, insulating,
and many more
Round cords are available in various diameters and colors. They can be purchased by the meter or as ready-made rings.
Thermal Properties – Heat, Cold and More
The thermal properties of round cords depend strongly on the material used.
Temperature resistance: Silicone cords, for example, can be used up to +200°C, while EPDM cords can withstand temperatures of up to -50°C.
Thermal conductivity: Round foam cords have low thermal conductivity and are therefore well suited as insulation.
Mechanical properties – flexibility, compressive strength and abrasion resistance
The mechanical properties of round cords are crucial for their resilience and service life.
Flexibility: Round cords are usually very flexible and can be easily bent and adapted to different shapes.
Compressive strength: Depending on the material and diameter, round cords can withstand different pressure loads.
Tensile strength: The tensile strength indicates how much tensile force a round cord can withstand before it breaks.
Abrasion resistance: Abrasion resistance is important when the round cord is exposed to friction.
Acoustic properties – sound insulation with round cords
In some applications, round cords can also contribute to sound insulation.
Sound insulation: Round cords made of soft, porous materials such as foam can absorb sound waves and reduce the sound level.
Round cords in use – diverse applications in all industries
Round cords are true all-rounders and are used in a wide variety of industries:
Seals: Round cords seal joints and gaps and prevent the penetration of water, dust, air or other media.
Buffer: Round cords serve as buffers and protect sensitive surfaces from impacts and damage.
Spacers: Round cords are used as spacers to separate components from each other.
Design elements: Round cords can also be used as design elements, e.g. to decorate furniture or as handles.
Examples of concrete applications:
Construction: Sealing of windows and doors, expansion joints, pipe penetrations
Industry: Mechanical engineering, plant engineering, vehicle construction
Household: Seals for household appliances, furniture, decoration
Hobby and leisure: crafts, model making, sporting goods
Rexio® – your partner for custom-made round cords
Rexio® offers you a wide range of round cords in different materials, diameters and colors. We will be happy to advise you and find the optimal solution for your individual requirements.
Our strengths:
Variety: Large selection of materials and dimensions
Quality: High-quality materials and workmanship
Customization: Custom-made products according to your needs
Experience: Many years of expertise in sealing technology
Consulting: Individual advice and technical support
Find the right round cord for your application now!
Our experienced team will be happy to advise you and help you with your selection. Contact us today!
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