What is the purpose of sealing in corrosion-preventative maintenance?

Sealing in corrosion-preventative maintenance primarily serves to protect against contaminants. Over time, various environmental factors can contribute to corrosion, including moisture, dirt, and chemicals. By sealing surfaces, we effectively create a barrier that prevents these harmful elements from coming into contact with the metal or other susceptible materials, thus reducing the risk of corrosion and promoting the longevity and safety of the aircraft structure and components.

Sealing also extends the life of surface treatments and coatings that are applied to metals, allowing them to function as intended by safeguarding against environmental exposure. This practice is critical in the aviation industry, where maintaining the integrity of aircraft materials is vital for operational safety and reliability.