SALCA Mercury Quick Change Trim Anodes Fernstrum Keel Cooler Anodes Metric Limited Clearance Collars Volvo Penta Anodes

Quality. Ingenuity. Reliability.

For over 40 years Sea Shield Marine has been the trusted name for Service Divers, Pleasure Craft Owners, and Cathodic Protection Professionals all over the World that demand High-Quality, Durable, and Reliable Zinc Anodes. Our experienced teams dedication to quality and proprietary manufacturing assures you’ll always receive the Worlds Best Zinc Anodes – but it’s our unmatched ingenuity that has allowed us to make our mark as a Cathodic Protection Industry leader. All Sea Shield Marine Anodes are made to MIL-SPEC standards MIL-A-18001 Zinc Anodes and MIL-A-24779 Aluminum Anodes, are pressure die cast, and are engineered for longevity. We manufacture and/or carry Zinc Anodes, Aluminum Anodes, and Magnesium Anodes for boats, yachts, commercial vessels, pleasure craft, or any of your cathodic protection needs – Insist on Quality, Insist on Sea Shield Marine! Proudly Made in the USA and Veteran-Owned.

Manufactured to Mil-Spec Standards

Zinc anodes: Mil-A-18001
Aluminum anodes: Mil-A-24779


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Important Product Information:

While we work to ensure that product information is correct, actual product weight may slightly vary. For additional information about a product, please contact us directly.

Sea Shield zinc anodes conform to MIL-A-18001

Quantitative analysis is as follows
LEAD: (Max.) 0.006%
IRON: (Max.) 0.005%
CADMIUM: (Min.-Max.) 0.025% – 0.070%
ALUMINUM: (Min.-Max.) 0.10% – 0.50%
COPPER: (Max.) 0.005%
ZINC: Remaining Balance

Sea Shield aluminum anodes conform to MIL-A-24779

Quantitative analysis is as follows:
INDIUM: (Min.-Max.) 0.014% – 0.020%
ZINC: (Min.-Max.) 4.00% – 6.50%
SILICON: (Min.-Max.) 0.080% – 0.20%
COPPER: (Max.) 0.004%
MERCURY: (Max.) 0.001%
TIN: (Max.) 0.001%
OTHERS: (Max. each not to exceed 0.10% total) 0.020%
ALUMINUM: Remaining Balance