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Tecnoseal R4AL Aluminum Rudder Anode 5 Inch Diameter

Manufacturer

Tecnoseal

<p>Tecnoseal stands as a global leader in the manufacture of sacrificial anodes for cathodic protection, serving the marine, industrial, and offshore sectors with unmatched expertise. Based in Grosseto, Tuscany, this Italian manufacturer has built a reputation over three decades for producing the world's most comprehensive range of corrosion protection solutions. Understanding how galvanic corrosion affects metal components in harsh marine environments is essential for anyone maintaining boats, engines, or industrial equipment exposed to water.</p><h3>Precision Engineering and Italian Craftsmanship</h3><p>Operating from their own foundry facility, Tecnoseal manufactures zinc, aluminum, and magnesium anodes using certified alloy specifications that meet US Military Standards and DNV RP B401 requirements. The company's product catalog includes nearly 2,000 standard anodes and over 3,000 custom-manufactured items, making it the most extensive offering available worldwide. Each anode undergoes rigorous spectrometric testing—more than 6,000 analyses annually—to ensure consistent electrochemical performance and compliance with international standards. This attention to quality extends to critical engine components, including specialized protection for <a href="/11576-tecnoseal-engine-crankshaft-main-bearing-5220">engine crankshaft main bearings</a> and other vital powertrain elements.</p><h3>Cathodic Protection Technology</h3><p>Sacrificial anodes work by corroding preferentially to protect more valuable metals immersed in electrolytic solutions like seawater, brackish water, or freshwater. When properly installed, these anodes form a galvanic couple with the protected metal, providing electrons that prevent oxidation and metal loss. Tecnoseal's anodes protect hulls, propellers, shafts, rudders, trim tabs, and engine components across recreational boats, commercial vessels, and industrial installations. The company's Bi-Tee® zinc alloy represents a breakthrough in environmental sustainability—it's the only cadmium-free zinc anode certified to DNV standards, eliminating toxic pollutants while maintaining superior protective performance.</p><h3>Custom Solutions and Technical Support</h3><p>Beyond standard catalog products, Tecnoseal's engineering department designs hundreds of custom anode solutions annually for shipyards, engine manufacturers, and specialized industrial applications. Their technical team provides comprehensive consulting services, including cathodic protection system design, anode positioning optimization, and installation support. The company maintains offices in Italy, the United States, the United Kingdom, the Netherlands, and Spain, ensuring global availability and technical expertise. With 98% of catalog items stocked and ready for immediate shipment, Tecnoseal combines Italian manufacturing excellence with responsive logistics to meet urgent protection needs across marine and industrial markets.</p>

Part Number

R4AL
07/12/2036 10:29 PM
Sale Price

$24.07

In Stock (6)

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Product Details

The Tecnoseal R4AL is a premium aluminum rudder anode designed to provide effective cathodic protection for rudders, trim tabs, and other underwater metal components on boats operating in saltwater and brackish water environments. This donut-style anode measures 5 inches in outer diameter and features a low-profile design at just 0.60 inches in height.

Key Features:

  • Full-size aluminum construction delivers reliable galvanic corrosion protection
  • 5-inch outer diameter fits standard rudder and trim tab installations
  • Includes stainless steel hex nut and socket cap screw for secure mounting
  • Captive hex nut design simplifies underwater installation and replacement
  • Lightweight at 1.22 lbs for minimal drag and easy handling

Aluminum anodes are ideal for saltwater and brackish water applications, offering excellent protection for aluminum hulls and outdrives. The included hardware ensures a secure, corrosion-resistant installation that maintains effective electrical contact throughout the anode's service life.

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