UltraMag magnesium anode and enhanced it with a new rod-style core for easier and more secure cable attachment. Rather then the standard ribbon core, we use a 1/4″ diameter steel rod core, where we connect the desired type and length of cable. This alternative connection method has several advantages that include:
- No hazardous sealant or primer is needed or used to seal the cable-to-anode connection, which is good for the environment.
- Worker safety is improved by eliminating the labor intensive molten liquid sealant.
- Superior protection of the cable from sharp bends as this connection method is much more tolerant of multiple bends.
- Copper cable does not become brittle due to overheating of the copper.
- More consistent connections
How to Order:
Ordering this style anode connection is easy. Farwest uses the designation “-R” to indicated the rod style core is desired. For instance, a #17D3 anode is a 17 pound anode with a standard ribbon core. Adding the “-R” converts the #17D3 anode to a #17D3-R, which tells us you prefer the rod style core. The remainder of the ordering information does not change.
Please Specify:
- The UltraMag anode of your choice. Refer to the dimension and weight chart.
- The quantity you require.
- The lead wire gauge, stranding, length and insulation type. Our standard is 10 ft #12 THHN solid wire, but other wire is easily substituted.
- Whether the anode is to be provided as a bare or a packaged anode. If prepackaged, the anode is shipped in a prepared backfill consisting of 75% gypsum, 20% bentonite, and 5% sodium sulfate contained in a cloth bag.
- Any other special requirements.
Should you have any questions concerning applications for the UltraMag anode, Farwest’s team of engineers and sales professionals can assist you in the proper anode selection.
| UltraMag Anode Chemistry* |
Aluminum Manganese Copper Silicon Iron Nickel Others each Magnesium | 0.01% max 0.50 – 1.3% 0.02% max 0.05% max 0.03% max 0.001% max 0.05% max Remainder |
* Per ASTM B843 Industry Standard for M1C high potential magnesium anodes.
Anode Dimensions & Weights

| Anode Type | Bare Weight | Packaged Weight | Bare | Packaged |
| A | B | C | D | E |
| 1R8 | 1 | 8 | 1-5/8″ | | 8″ | 3-1/4″ | 10″ |
| 3D3 | 3 | 12 | 3-1/2″ | 3-3/4″ | 5″ | 5-1/2″ | 10″ |
| 5D3 | 5 | 17 | 3-1/2″ | 3-3/4″ | 8″ | 5-1/2″ | 14″ |
| 9D2 | 9 | 35 | 2-3/4″ | 3″ | 27″ | 5-1/2″ | 32″ |
| 9D3 | 9 | 27 | 3-1/2″ | 3-3/4″ | 13-7/8″ | 6″ | 17″ |
| 17D3 | 17 | 45 | 3-1/2″ | 3-3/4″ | 25-1/4″ | 6-1/2″ | 29″ |
| 20D2 | 20 | 70 | 2-3/4″ | 3″ | 56-3/4″ | 5-1/2″ | 66″ |
| 32D5 | 32 | 70 | 5-1/2″ | 5-3/4″ | 19-7/8″ | 8″ | 28″ |
| 40D3 | 40 | 100 | 3-1/2″ | 5-3/4″ | 60″ | 6-1/2″ | 66″ |
| 48D5 | 48 | 100 | 5-1/2″ | 5-3/4″ | 30-1/8″ | 8″ | 38″ |
| 60S4 | 60 | 126 | 4-3/8″ | 4″ | 60″ | 7″ | 64″ |