A tradition of anode craft for 40 years

For over 40 years Sea Shield Marine Products, Inc. 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 assures you’ll always receive the best.


Our unmatched ingenuity that has allowed us to make our mark as a Cathodic Protection Industry leader.


Proprietary manufacturing assures you’ll always receive the Worlds Best Zinc Anodes


All Sea Shield Marine Anodes are made to MIL-SPEC standards MIL-A-18001 Zinc Anodes and MIL-A-24779 Aluminum Anodes.
SALCA Line Cutter Anodes SALCA Line Cutter
Mercruiser Quick-Change Anodes Mercruise Quick-Change

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