Immersed Tunnels - Gina Gaskets, Omega Seals

The Gina gasket and Omega seal are used between the sectional elements of immersed tunnels to prevent water ingress due to external water pressure. This combination of seals not only allows for sealing but also for the transfer of the hydrostatic loads and movements between the tunnel ends due to soil settlement, creep of concrete, temperature effects and if required earthquakes. The designs are generally based on the expected tunnel lifetime of 100 years


Trelleborg is the specialist in the design of Gina gaskets and Omega seals. Trelleborg not only supplies these seals, but upon request also offers site assistance during installation. Since the early sixties Trelleborg has supplied a large number of seals for immersed traffic, cooling water, pipeline and cable tunnels in many countries all over the world.


GINA Gasket Product Information sheet [pdf]

Omega Seal Product Information Sheet [pdf] 


Gina Seal Dynamic Movement Absorption

 Underwater Gina Seal Tightening Segments

Underwater Omega Seal Twisting


Last updated 2011-01-27 |  Print this page Print this page |  E-mail this page E-mail this page   Facebook   Twitter
E-mail this pagex

Receiver e-mail address

Your e-mail address


Your message