unifiber shield gel foil protectionIntroducing the Unifiber Shield Gel. Protectyour hydrofoil from galvanic corrosion! This mainly affects the screws that hold the Foils together. When stainless steel, titanium, or carbon come into contact with aluminum, a reaction occurs that can practically weld them together. Over time, the materials can become brittle and break. The insulating and water repellent properties of Shield Gel create a barrier between the screws and the aluminum,