![Fehmarn-beltpng](/marine-and-infrastructure/-/media/marine-systems/sustainability/fehmarn-belt.jpg?h=405&iar=0&w=720&rev=b69a550f02f54e9fb1fae29054549535&hash=6A27263C84F852EB6816FE3EBEC40D52)
Sealing the World's Longest Immersed Tunnel
As a global leader in sealing systems for immersed tunnels, Trelleborg
is delighted to supply seals for the construction of the 18-km long Fehmarnbelt
immersed tunnel, a project that will deliver a green corridor between both
Denmark and Germany, reducing travel time from 1 hour to 7 minutes.
Landmark Immersed Tunnel Projects – Sealed for a Lifetime
Take a look at some of the most exciting projects we’ve been part of, and delve deeper into our tailor-engineered solutions that feature in some of the most technically complex and challenging environments.
![Trelleborg's Immersed Tunnel sealing projects - Keeping Immersed Tunnels Watertight for 120 Years GME-Featured-banner-Immersed-tunnel-sealing](/marine-and-infrastructure/-/media/marine-systems/resources/case-studies/gme-featured-banner-immersed-tunnel-sealing.jpg?h=405&iar=0&w=720&rev=a3c0eaba6dd342529814ee2282b7b615&hash=F3AA669157C2F5E658A8B5E7C7F330DA)