More than 35 years ago Beele Engineering started offering gastight penetrations for utility pipes, preventing gas explosions due to leaking gas inlets. The latest specialist sealing concerns the immersion tunnel near the South-Korean city of Busan that is being immersed by Mergor, a subsidiary of Strukton. The deepest element of this tunnel was placed recently at a depth of 50 metres. The Geoje Fixed Link connects the second capital of South Korea, Busan, with the Geoje peninsula, reducing the travel time between the two from 2.5 hours to just 50 minutes. The tunnel is 3.2 kilometres long.