MGDuff MD56 Magnesium Disc Anode 100mm

Fresh water


The MGDiff MD56 is a versatile disc anode that can be bolted anywhere on the hull for freshwater. Bolt On - Disc 0.25 Kgs Nom Net Weight
Dia 100mm Depth 25mm

Sold singularly (1 per pack)

Type: Freshwater anode
Diameter: 100mm
Depth: 25mm 
Weight: 0.25kg
Fixing hole: 10mm
Quantity per pack: 1

1. Choose your material:
- Zinc for saltwater boats
- Aluminium for saltwater or brackish waters
- Magnesium for fresh water (do not use directly on wooden hulls, contact us for more info)
2. Select Style and Model:
- Bolt-on hull anodes come with 8" or 9" hole centres (You have to buy the studs or bolts separately) weld-on requires the anode to be welded in place (usually commercial vessels)
- There are different models of anode depending on where you put it. Shaft and beneteau anodes protect the drive shaft and stern tube. Hull anodes can be placed anywhere depending on where you want to protect and pencil/engine anodes tend to be specially designed for each brand and model engine. Button or disc anodes are designed to protect rudder / trim tabs.

*For more information on placement or engine anodes please contact us on 00353 28 23190.

**With regard to steel boats, it is vital that special attention is paid to areas around the water line. These are particularly vulnerable but receive no protection from anodes above the water line.

***All MGDuff Magnesium Anodes will suit GRP or steel hulls (not wood). For aluminium hull anodes please contact one of our branches.

Do not mix and match aluminium, zinc or magnesium anodes on the same boat


High spec MGDuff Magnesium Anodes for leisure and commercial vessels.

Copper: CU 0.08
Aluminium: AL 5.3-6.7
Silicone: Si 0.3 Max
Iron: Fe 0.005 Max
Manganese: Mn 0.025
Nickel Ni 0.003 Max
Lead: Pb 0.03
Magnesium: Mg Remainder
Potential Ag/AgCl -1.5v 1230

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