Specialist industrial safety seal supplier Roxtec, based in Bury, has been selected by Scottish & Southern Energy and RWE NPower Renewables to supply the world's largest offshore wind farm.
The Greater Gabbard wind farm off the Suffolk coast is currently being developed and is due for completion in 2012.
Graham O'Hare, UK managing director of Roxtec, said the company's cable transit seals are being used in all 140 of the 3.6MW wind turbines, which could power around 530,000 homes.
"This is an absolutely terrific contract for Roxtec to land," he said. "The highly specialised nature of the contract means we have had to design bespoke cable transit seals able to withstand the harsh offshore environment. In total ten different applications are being used on the project specifically sealing the cabling within the wind turbines from fire, water and blast."
Roxtec has extensive experience in the wind industry having been used in almost every offshore wind farm in Europe.
Roxtec will be exhibiting at the British Wind Energy Association conference in Liverpool between 20 and 22 November.