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Neodymium Ring - 20mm x 5mm x 3mm

More Information
Product Code23015
Pull Force*3.8 kg
Weight7 gm
StyleRare Earth Ring magnet
CoatingNickel (NiCuNi)
Direction of MagnetisationAxially magnetised thru the 3mm
Tolerance+/- 0.05mm
Inside Diameter5mm
Outside Diameter20mm

*Measured against up to 10mm mild steel.

100% of 5
$2.37 1 to 9 items
  • $1.76 buy 10 to 99 items and save 26%
  • $1.38 buy 100+ items and save 42%
In stock
Prices are GST inclusive - Australia only.
Volume pricing available on request.

ring magnet dimensions

Magnetic Product Description:

This rare earth ring magnet has an outside diameter of 20mm, an inside diameter of 5mm and a thickness of 3mm. It has a pull force of 3.8kg. It is identified by the AMF magnet part number 23015.

Uses for our rare earth disc magnets:

Building high quality laboratory equipment including temperature and humidity control cabinets, plant growth chambers and commercial ovens and refrigerators is made simpler and safer with neodymium ring 20mmx5mmx3mm ring magnets. Supplying the medical, pharmaceutical, agriculture and defence industries the specialised laboratory equipment, like these ring magnets, must be accurate and durable.

Many companies offer to design and construct equipment to suit a specific laboratory purpose. The use of magnets, including ring magnets as a connective tissue or a versatile and well established method of hold, lock, release and re-hold allows for simplicity of design and use. Magnets, whose fixing and intuitive push and pull forces operate through attraction and repulsion provide opening and closures with very significant advantages over traditional fastening systems.

Penetrative fastening methods like screws, bolts and rivets breach the surface of the equipment, that is, break into the surface in order to perform their fastening function. Breaching the surface of laboratory equipment, glass, metal or plastic creates a void for the introduction of bacteria and waste accumulation (grime).

Magnets, fortunately, hold or lock, depending on the pull force of a particular magnet, through low impact yet very secure engagement, without creating a breach in the material or fabric of the equipment. In the controlled environment of a laboratory, managing every contamination risk is paramount. Magnetic properties of lock and release at a predetermined pull force, also allows for the equipment to be taken apart for regular cleaning. This property of magnetic fastening allows the equipment to be dissembled to be cleaned and sterilised, more often, more easily, more cheaply and more thoroughly.

In a controlled, sterile environment where research is undertaken often for the greater good of all human beings, magnets, including these modest ring magnets, are the unsung heroes in this important work.

Ring magnets of moderate pull force are often used in school projects and theatrical productions. Also found in modern cabinetry secret fixing applications in retail and kitchen and bathroom renovations.

Customer Reviews
  1. Excellent customer service.
    Very happy with the support while placing a phone order.

    Swift dispatch and delivery.


    10/10 Will order again!

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