Expanders: universal rubber ropes
Rubber Cord
A rubber cord is a versatile and reliable solution used across various industries, from sports and tourism to industry and advertising. Constructed with a latex core and a braiding of polypropylene or PVC, it combines high flexibility with resistance to mechanical damage and weather conditions, including UV radiation. This ensures it retains its properties even during intensive outdoor use.
Material and properties of rubber cords
Lumi rubber cords combine flexibility, durability, and resistance to external factors, making them a reliable choice for long-term use in both professional and everyday applications.
Both polypropylene and PVC braiding options offer low weight and resistance to UV radiation and variable weather conditions. Additionally, both variants perform well in environments requiring increased resistance to moisture, dirt, and intensive use, such as gardening and outdoor sports.
Thanks to their thoughtful design, rubber cords maintain their properties even with repeated stretching, and their surface is resistant to wear at contact points and fastenings. Regardless of temperature, sunlight, or humidity, they remain functional and durable, making them an ideal choice for demanding users.
Available rubber cord variants
Lumi rubber cords are available in diameters from 3 mm to 9 mm, allowing for easy selection of the appropriate variant—from lightweight tourist fastenings to heavily exploited systems in industry or transportation.
Our offer also includes various color options, with the possibility of matching the hue to the visual requirements of a project. Cords can be cut to size, spooled, or packed in cardboard boxes.
Most variants are available off the shelf, enabling quick order fulfillment. We also accept individual orders for specific lengths, colors, or finishes.
4 mm black rubber cord
The 4 mm black rubber cord is a universal solution for applications where precision, aesthetics, and controlled tension matter. Thanks to its slim design and appropriately balanced elasticity, it works well for lightweight fastenings in both everyday and technical use. The black color ensures discreet integration with the surroundings and doesn’t draw excessive attention, which can be important in advertising displays or consumer equipment.
6 mm black rubber cord
The 6 mm black rubber cord is a proven choice for applications requiring a balance between elasticity and high tensile strength. As an intermediate variant, it offers universal tension strength and resistance, making it popular in the transportation, automotive, and outdoor mounting system industries. Made with a durable, UV-resistant braiding and a latex core that provides controlled elasticity, its 6 mm diameter allows for stable fastening of medium to heavy items without the risk of breaking or excessive stretching.
8 mm rubber cord
The 8 mm rubber cord is a robust choice for applications where durability, tensile strength, and resistance to intensive use are priorities. With its larger cross-section, it withstands higher loads and is ideal for securing heavier cargo or in conditions requiring stronger tension. Made with a latex core and a resistant braiding (polypropylene or PVC), it retains full flexibility while maintaining the structural rigidity needed for work under load.
The 8 mm rubber cord is resistant to mechanical abrasion, even with contact with sharp surfaces or intense movement, and to UV exposure, allowing for long-term outdoor use without the risk of cracks or degradation from sunlight.
This makes it a reliable solution for professionals seeking a product that can withstand challenging working conditions without losing its properties.
Applications of Lumi expanders
Expanders are ideal wherever quick mounting, reliable tension, and resistance to external conditions are needed. Lumi rubber cords with a latex core and durable braiding of polypropylene, polyester, or PVC offer a practical solution for both technical industries and everyday users.
Transportation and logistics
In transportation, expanders are often used to stabilize cargo:
- They secure luggage in trunks and trailers,
- Facilitate fastening of irregularly shaped items,
- Enhance safety during transport without requiring complex fastenings.
Thanks to their various diameters and endings (e.g., with hooks), they can be easily adapted to specific mounting systems.
Advertising and outdoor displays
Expanders are excellent for tensioning advertising banners, tarps, and large-format graphics. Their elasticity ensures even tension distribution, preventing material deformation and enabling quick setup, even with frequent display changes. This is a proven solution in the event, exhibition, and outdoor industries.
Sports and tourism
In the sports and recreational sector, expanders serve as resistance training equipment for strength or rehabilitation exercises. They are also great for securing gear, bicycles, kayaks, backpacks, or tents. Their weather resistance and durability make them practical for daily use and outdoor expeditions.
Accessories for expanders — spring hooks
For an expander to function reliably and suit a specific application, appropriate mounting accessories are essential. Spring hooks are a basic type of ending used in expanders. Thanks to their design, they allow secure attachment to any mounting point while maintaining easy and quick clipping and unclipping. Made from durable materials (typically steel or weather-resistant plastics), spring hooks offer high load resistance and do not deform under tension.
