Product Description

Ring Magnet OD x 2"ID x 1"42 4" Neodymium NR030-42NM

This product measures 4" in diameter, 1" in thickness and features a 2" center hole through the thickness of the magnet. It is made of a grade N42 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, and when handling due to their brittle nature and to avoid injury due to pinching.

Material: Sintered NdFeB. Grade N42
Gauss Rating: 13,200 Gauss
Holding Power: 300 lbs
Pole Orientation: Axially magnetized, the poles are on the two flat surfaces.
Coating: Ni+Cu+Ni triple layer coated, the best coating available
Tolerance: All dimensions +/-0.002"

Note: This is the largest ring magnet we carry in stock, but we can make 8" rings for speakers. Should you need a larger magnet, 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.
COMMERCIAL USE ONLY.
If damaged please dispose of completely. Shards are still magnetized and if swallowed can inflict serious damage if magnets join inside the digestive tract.

Other Details

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.