Tecnoseal X19 Shaft Anode - Zinc - 5" Shaft Diameter

The Tecnoseal X19 Shaft Anode in zinc is a marine-grade cathodic protection component designed to safeguard propeller shafts and other submerged metal components from corrosion in saltwater and brackish environments. Used extensively in boating, commercial marine applications, and offshore equipment, this shaft anode sacrifices itself electrochemically to prevent rust and degradation of critical drivetrain parts. The 5" inner diameter accommodates standard propeller shaft sizes, making it a direct replacement for worn anodes or a retrofit solution for unprotected installations.

Constructed from high-purity zinc, the Tecnoseal X19 operates on the principle of galvanic corrosion, where the anode corrodes preferentially to the steel or bronze shaft, creating an invisible electrochemical barrier. With an outer diameter of 6.732" and a compact height of 3.504", this anode delivers substantial protection surface area while fitting standard shaft logs and strut assemblies. The integrated four-hole mounting pattern ensures secure fastening and proper positioning around the shaft, allowing full circumferential contact for uniform cathodic protection. Zinc anodes are the industry standard for marine applications due to their reliable potential, consistent dissolution rate, and proven longevity in salt-water service.

Boat owners, fleet operators, and marine maintenance professionals rely on the Tecnoseal X19 to extend shaft life and reduce costly corrosion repairs. This anode is ideal for inboard and outboard shaft installations, sailboats, powerboats, and commercial vessels operating in coastal or open-ocean environments. Routine inspection and replacement every 2–5 years—depending on water chemistry and vessel usage—keeps protection optimal. Simply remove the spent anode and install a fresh unit using the existing mounting holes for immediate corrosion defense.