1. Introduction
If you have worked at a dock or a shipyard, you might have seen those big black “balloons” that can lift a sunken ship or help a vessel slide smoothly into the water.
These are salvage airbags, also known as marine rubber airbags.
They are not just big inflatable bags — they are powerful tools for marine rescue, salvage, lifting, and transport.
Today, let’s talk about their materials, uses, and why, among so many marine airbag companies, SunHelm is the first choice for many people.
2. What Materials Are Salvage Airbags Made Of?
Don’t be fooled by the word “airbag” — there’s a lot of engineering inside:
Outer Rubber Layer
This is the first line of defense. It must resist wear, seawater corrosion, and strong sunlight.
With years of production experience, SunHelm has recently developed a new synthetic rubber that works even in extreme cold, down to -50°C.
Multiple Layers of Synthetic Tire Cord
Think of this as the skeleton. It gives the airbag high tensile and compressive strength so it stays stable even underwater.
Inner Rubber Layer
This layer is tightly bonded to the cord fabric and ensures airtightness, preventing leaks.
Fittings and Straps
Corrosion-resistant metal valves and nylon straps make it easy and safe to inflate, deflate, and secure the airbag.
Compared with light PVC underwater bags, marine rubber airbags can handle much higher pressure, making them better for heavy-duty rescue and ship launching.
3. What Can They Do?
Salvage airbags have many uses:
- Lifting ships for launching
- Salvaging sunken vessels
- Floating underwater pipelines and sea cables
- Supporting temporary bridges and docks
Their advantages are clear: they save money, save time, and can be reused many times — perfect for long-term work in coastal areas and shipyards.
4. About the Industry and SunHelm
4.1 Who Is SunHelm?
Among marine airbag companies, SunHelm is a trusted and experienced manufacturer:
- Nearly 20 years of airbag production experience
- Wide range of sizes — diameters up to 2 meters and lengths up to 20 meters
- Holds international certifications like ISO 14409, with a safety factor 4.5 times higher than industry standards
- Products used in more than 70 countries — at docks, shipyards, and rescue sites
4.2 How Is SunHelm Different?
- Strong materials — multiple cord layers plus reinforced shoulders for extra durability
- High safety factor — perfect for heavy-duty work
- Strict quality control — every product tested for strength and endurance before delivery
- Global service with quick response times
5. How to Buy Reliable Salvage Airbags?
Some practical tips:
- Check the materials: Natural rubber + multi-layer cord structure lasts longer
- Check the safety factor: 4.5 or higher is safer
- Check certifications: Look for ISO 14409 and other international standards
- Check the service: Can the manufacturer provide customization, installation help, and global after-sales support?
- Match the use: Choose the right size and model for your specific job
6. Conclusion
Salvage airbags may look simple, but the materials and workmanship matter a lot.
Choosing the right manufacturer means your airbag won’t fail when you need to lift a ship, move cargo, or build a temporary bridge.
Among marine airbag companies, SunHelm stands out worldwide with its quality materials, smart design, and reliable service.