Camp Zinc Donut Collar Shaft Anode

The Camp Zinc Donut Collar Shaft Anode is a sacrificial zinc shaft anode (also called a shaft zinc or donut collar zinc). It protects boat drive shafts and other oxidizable underwater metals from galvanic corrosion. The low-profile donut design suits installations where clearance along the shaft is limited, such as the space between the strut or cutlass bearing and the propeller.

Key Features:

• Sacrificial zinc construction: The zinc corrodes in place of the shaft and nearby metals, giving cathodic protection in salt and brackish water.
• Copper contact: A copper contact keeps the anode permanently grounded to the shaft.
• Compact collar style: It fits where a larger shaft anode would not.
• Simple clamp-on installation: The collar clamps onto the shaft.
• Made in the USA: Camp Company marine anodes are made in the USA. The manufacturer states that its marine zinc anodes conform to MIL-A-18001.

Installation and Care:

• Clamp the anode to a clean, unpainted section of the shaft so it makes good metal-to-metal contact.
• Do not paint the anode.
• After installing a new anode, check propeller clearance before you start the engine.
• Inspect the anode regularly. Anodes exposed to cavitation wear out faster.

Camp donut collar shaft anodes come in a range of shaft diameters, so you can choose the one that matches your shaft.