Gaskets for permanent application in tunnelling

Our world-class know-how in coextrusion and our extensive experience in material handling form a solid basis on which we design a wide range of products specifically for you.
Datwyler develops and produces extruded elastomer specific to your requirements in:

Gaskets for segmental precast lining

Datwyler develops compression gaskets for bored tunnels using the shield-driving method, lined with prefabricated segments made of reinforced concrete.  We develop these sealing systems individually to meet the design of your specific tunnel.  To address the ever increasing requirements of our customers, Datwyler has already developed numerous profile geometries and brought those into use in more than 450 tunnel projects around the world.  Datwyler offers you a variety of special solutions to effectively cover the whole range of your tunnel applications, be they in supply, sewage or transportation.

Anchored gaskets for segmental precast lining

In cooperation with leading segment mould manufacturers, Datwyler can provide you with gaskets that are anchored directly into the concrete segments, thus significantly improving the quality of your applications, while keeping down your production costs and adhesive consumption.

Hydrophilic seals

Datwyler Black Swell is based on an EPDM compound with swelling capabilities.  It can be used in many of your applications, for example as profiles for sealing solutions.  For the first time, we have been able to combine the excellent properties of the EPDM polymers with swelling material.  In doing so, Datwyler is able to provide you with advanced in technology in both durability and chemical resistance.

Gaskets for tunnel boring machines

Datwyler can offer you a variety of seals for your tunnel boring machine, as well as for the sealing of your launch shaft, securing the operation of your TBM as well as its entry into the ground.

Adhesives

The adhesive G3000 plus the toluene-free products from Datwyler which were designed to meet the toughest requirements for bonding elastomer gaskets to reinforced concrete tunnel segments in your applications, these adhesive offer you a cost-effective solution together with the highest reliability.  In collaboration with the company WIWA, a specialized coating machine has been developed for the economical use of the adhesive G3000 plus in customer applications.

Methods of application and testing

It has always been a priority at Datwyler to provide you with the maximum support when you use our products.  So, our employees train the contractor's construction personnel on your site and stay with you on the project throughout its duration.  Datwyler also offers you many other forms of support such as in-house testing procedures, for the T-joint water tightness test on your tunnel segment gaskets, for example.