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New Generation of Tail Seal Grease for TBMs
Condat started its lubricants activity for underground works in 1989 when it was awarded by international tender to supply the tail seal grease WR89 for the tunnel boring machines (TBM) used to build the Channel Tunnel, linking France to England. Since then, this product, often copied but never equalled, was used to bore more than 4000 km in the most extreme conditions. This new tail seal grease not only anticipates the next regulations but it will also permit to be in accordance with the technological progress while meeting more and more severe technical requirements. WR89 NewGeneration is continously pumped during the progress of the machine. Injected between the rows of brushes, it allows a perfect sealing against water, slurry and grout, insuring the sealing of the TBM while tunneling. The innovating formulation of WR89 NewGeneration provides improved performance with sustainable development in mind. It uses more eco-friendly and biodegradable components in anticipation of future specifications. It also offers a higher level of safety thanks to its fire-resistant properties. Also, new anti-friction additives reduce by at least 10% the consumption of lubricant – this reduction has been proved on several jobsites – as well as a perfect compatibility with WR89 and the emergency product, Condat Emergency Seal. WR90, the lubricant used for the first packing of the brushes, also benefited of the same evolution in a sustainable development way and is replaced by the WR90 NewGeneration. For over 20 years, Condat has developed a complete range of products, lubricants and additives fulfilling technical, safety and environmental requirements for underground works with TBM. Its technical team is specially dedicated to the good use of these products on any type of TBM worldwide.
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Now, WR89 is evolving... the lastest release of the Condat R&D lab, WR89 NewGeneration is available now.
