Tecnoseal Magnesium Plate Anode 7.5" x 2.75" x 1/2"

The Tecnoseal Magnesium Plate Anode 7.5" x 2.75" x 1/2" is a critical cathodic protection component designed for marine and freshwater environments where metal corrosion threatens equipment longevity and safety. Magnesium anodes are sacrificial elements that preferentially corrode in place of more valuable metals—hulls, propellers, shafts, and underwater fittings—making them essential for boat owners, commercial marine operators, and water system managers who rely on galvanic corrosion control.

Constructed from pure magnesium, this plate anode operates on electrochemical principles: magnesium has a more negative electrochemical potential than steel, aluminum, and bronze, so it oxidizes first, protecting those metals from rust and corrosion. The compact 7.5" x 2.75" x 1/2" plate design allows flexible mounting in confined spaces while delivering sufficient surface area for effective galvanic protection. Weighing just 1 lb, this anode integrates easily into bilge systems, thruster tubes, heat exchangers, and sea chests without adding significant weight or bulk to the vessel or infrastructure.

This magnesium anode is ideal for saltwater and brackish environments where corrosion rates are high and conventional coatings alone are insufficient. Freshwater systems, cooling loops, and internal piping also benefit from magnesium protection. Installation typically requires mounting to the hull or fitting using a stainless steel bolt, with periodic inspection to verify anode wear; when 50% of the original mass is consumed, replacement ensures continued protection. Tecnoseal's manufacturing expertise ensures consistent purity and performance, making this anode a trusted choice for marine maintenance professionals and DIY boat owners seeking reliable, economical corrosion control.