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  • Neodymium Ring Magnet
  • Neodymium Ring Magnet
  • Neodymium Ring Magnet
  • Neodymium Ring Magnet
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N45 4"OD x 2"ID x 1/2" Neodymium Rare Earth Ring Magnet

20.00 Ounces
Usually ships in the next business day
Calculated at checkout
Your Price:
$35.63 (You save $57.34)


This product measures 4" in diameter and 1/2" in thickness and features a 2" hole through the thickness of the magnet. It is made of a grade N45 neodymium, iron, and boron magnetic alloy blend. This magnetic blend is patent licensed and made under the ISO 9001 quality control systems. They are plated in a nickel-copper-nickel coating for a shiny corrosion resistant finish. Neodymium ring magnets are perfect for use as magnetic fasteners around the home or for use in commercial applications.
Please note that all neodymium rare earth magnets are fragile and require caution when installing to prevent shattering the magnet due to their brittle nature, and to avoid injury due to pinching.
  • Material: Sintered NdFeB. Grade N45
  • Gauss Rating: 13,500 Gauss
  • Pulling Force: 161 lbs.
  • Pole Orientation: Axially magnetized, the poles are on the two flat surfaces.
  • Coating: Ni+Cu+Ni 3 layer coating, the best available.
  • Tolerance: The tolerances of all the dimensions are +/-0.002in with coating. 

This is the largest ring magnet in stock but we can make 8" rings for speakers. Should you need a quotation for the larger magnets, please contact us. 

PLEASE NOTE:             

  • All magnets may chip and shatter, but if used correctly, can last a lifetime.
  • Keep away from pacemakers.
  • Not for children, parental supervision required.
  • If damaged please dispose of completely. Shards are still magnetized and if swallowed can inflict serious damage if magnets join inside the digestive tract.


Warranty Information

This product is covered by 10 year warranty on the magnetic strength under normal usage. Used in the environment which has high temperature and virbation will void this warranty. The product should not be used in the outdoor or high humid or salty environment except extra insulation measurement is taken.

Other Details

Gauss Rating:
13,500 Gauss
Pulling Force:
161 lbs
Pole Orientation:
+/- 0.002in


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