The basic element of an expansion joint is the bellows a flexible, corrugated tubular metal element to absorb movements in a piping system.

Pipe Penetration seals are used to allow tubes or pipes to expand thermally, they penetrate the shell of a boiler or similar pressure casing without damaging the surrounding shell or pressure casing

Application areas are: Air conditioning, heating and ventilating systems in industrial buildings, hospitals, hotels and on board ships and off-shore, Sewage disposal and water treatment plant, pumps, etc.