- Description
The MARTYR Aluminium Donut Shaft Anode is a compact collar-style sacrificial anode designed to protect propeller shafts and running gear from galvanic corrosion. Its solid ring (donut) design fits directly around the shaft, making it ideal for installations where space is limited near the propeller.
Manufactured using high-purity aluminum alloy, these anodes deliver superior performance in saltwater and brackish environments, offering longer lifespan and better efficiency compared to traditional zinc anodes. MARTYR anodes are produced to U.S. military specifications, ensuring consistent quality and durability.
Key Features
- Donut (Collar) Design: Compact ring-shaped anode for direct shaft mounting
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Material – Aluminum (AL):
- Ideal for salt & brackish water
- Longer-lasting and more efficient than zinc
- Secure Installation: Equipped with Allen screws or clamping system for tight fit
- Low Profile: Perfect for tight clearance areas near propellers
- High-Quality Alloy: Pressure die-cast and chemically tested for consistent performance
- Easy Installation: Split or slotted design allows installation without removing shaft
Shaft Size vs Length
| Shaft Size | Length |
|---|---|
| 3/4" | 2-1/8" |
| 7/8" | 2-1/8" |
| 1" | 2-1/4" |
| 1-1/8" | 2-1/2" |
| 1-1/4" | 2-1/2" |
| 1-3/8" | 3" |
| 1-1/2" | 3" |
| 1-3/4" | 3-1/2" |
| 2" | 3-1/2" |
| 3" | 5" |
