The magnets are fitted with rubber flex joints, which enables them to be used on curved or uneven steel surfaces. By tightening the wing nuts, the rubber gasket is compressed slightly and an initial watertight seal against the hull is created.
Once the inside has been pumped dry, the pressure difference will compress the rubber gasket further. At this point, the watertight seal is mainly achieved by the water pressure itself.
Miko’s cofferdams are a safe and reliable option for in-water repair at any depth.