What are shock cords used for? The top uses you may not know

Shock cords, sometimes known as bungee cords, are elastic ropes that stretch and contract to absorb and manage shock or tension in various applications. They are typically made from a natural or synthetic rubber enclosed in a braided yarn cover, providing a versatile and reliable solution across industries.

At Ibex Marina Ropes, we offer both heavy-duty and commercial-grade shock cords, which share the same focus on flexibility, strength, and durability. However, they are each designed for specific applications – so if you need a quick insight on some examples, we have rounded up some of the most prevalent ones below.

Top uses for our heavy shock cords at Ibex Marina

Heavy shock cords are another core part of our offering here at Ibex Marina. These are designed for more demanding applications that require higher tensile strength, repeatability and durability. These cords are typically used in industries where significant forces are involved, such as aerospace, military, and heavy marine operations. Here is a quick (non-exhaustive) look at some of the key uses for our heavy shock cords.

• Aerospace usage. Heavy shock cords are frequently used in aerospace applications due to their high strength and reliability. They help manage and absorb the shock loads encountered during aircraft operation, including in seat cushioning systems for crew members. They are also used in the design of systems that require precise control and durability under extreme conditions.

• Military applications. Shock cords have several important military uses, both in the marine and aerospace sectors. In marine operations, shock cords can be used for specialist applications such as launching unmanned aerial vehicles. They are also commonly used in runway overrun arrestor systems, where they prevent aircraft from overrunning the runway in emergency situations – a system that was first developed during WWII.

• Civilian marine. Heavy shock cords are used extensively in civilian marine operations, particularly for specialist craft like towed seismic streamers, which are often used to gather data from our oceans, and in extreme conditions. These cords act as shock absorbers, aiding the stability of towed streamers so they can obtain accurate data. Otherwise, wave motion can often interfere with the results. Additionally, heavy shock cords are used in cranes and gantries at ports, enhancing shock absorption in the festoon system.

• Civilian aircraft. In civilian aviation, heavy shock cords are used in crew seating systems, primarily for use in adjusting seat positions when crews change over – both to preserve comfort during flight, and maximise their safety in risky conditions (for example, during turbulence, or emergency situations).

• Emergency line braking systems for ziplines. Heavy shock cords are also employed in systems that are essential for safely slowing down and stopping a rider in the event of an emergency. The shock cords absorb and dissipate the force, ensuring a smooth and controlled stop.

• Human slingshot. This is a slightly more unconventional usage of our heavy shock cords, but they have been used before for a human slingshot system, capable of launching people through the air at dizzying speeds of up to 90mph. (Please be reassured though that they stay attached to the system at all times – this is what makes a slingshot distinct from a catapult!) You can watch a video of it here.

Top uses for our commodity shock cords at Ibex Marina

Commodity shock cords are commonly found in everyday applications, offering practical solutions for a wide range of industries. They are often used where flexibility, ease of use, and cost-effectiveness are the priority. Here are some of the most popular uses for our commodity shock cords.

• Marine industry. Shock cords are integral in the marine industry for applications such as securing bimini tops, spray hoods, and sail shades. These cords offer a reliable means of ensuring these items stay in place, even in windy conditions. Additionally, shock cords are used in kayak spray decks to keep the covers securely in position, ensuring water does not enter the boat.

• Fitness and leisure. Many fitness and leisure activities rely on shock cords – for example, with resistance bands for strength training. These versatile bands allow for a variety of exercises, stretching, and toning. They are also put to good use in trampoline parks – not only in trampolines to add the necessary bounce but also for connecting safety netting, ensuring a safe and enjoyable experience.

• Cover and camouflage netting suspension. Outdoor enthusiasts and “weekend warriors” often use shock cords to suspend covers or camouflage netting. Whether for camping, hunting, photography, or military simulation, shock cords help to provide a practical and adjustable way to set up tarps, nets, or shelters that need to withstand the elements.

• Barrier systems. Shock cords are often incorporated into barrier systems in busy public spaces such as stadiums or buildings. These systems can be vital in helping control the movement of crowds, and guiding people safely in and out of venues or transport hubs – whether for a concert, sporting event, or emergency situation.

• Healthcare. In healthcare settings, shock cords play a surprisingly essential role. One notable use is in hospital sack holders. These cords help secure medical waste bags and linen bags, ensuring that they stay in place even during transport.

• Securing awnings and mat covers. Shock cords are commonly used to secure awnings and mat covers, keeping them stable and in position during adverse weather conditions. The stretchable nature of the cords makes it easy to fasten covers, ensuring they stay in place without causing any damage to the material.

• Take-up systems. Shock cords are used in take-up systems to adjust the tension of various mechanisms. These systems are particularly helpful in applications where tension needs to be dynamically adjusted, such as in machinery or fabric systems.

As we have touched upon above, this is not a comprehensive list of potential shock cord applications, but it can be useful in illustrating the sheer versatility of this equipment. And if you have any questions about the suitability of shock cords for your own applications, or any queries about their technical specifications, feel free to contact us here at Ibex Marina. You can give us a call on 01706 360 363. Our expert team is always happy to help!