Neodymium magnets are typically coated with Nickel to prevent rust and corrosion from moisture, but unless coated with a special corrosion resistant coating, they are not waterproof.
They should be kept away from water (especially salt water), as exposure to moisture can cause them to corrode and lose their magnetic strength over time. It is important to note that even a small amount of water, such as high humidity, can cause rust to form on the surface of the magnets. If you need to use neodymium magnets in a damp or wet environment, it is best to use a magnet with a corrosion resistant coating, or encase them in a waterproof container to protect them from moisture.
Waterproof/Corrosion Resistant Coatings
If you are looking for waterproof neodymium magnets, we have a few options.
Sewing Magnets - These magnets are encased in a waterproof PVC pouch that protects them from moisture. The PVC pouch also enables the magnets to be sewn into fabric or other materials.
Black Epoxy Coated Magnets - The black epoxy coating on these magnets provides much greater corrosion resistance than normal Nickel coatings.
Plastic Coated Magnets - These magnets are coated with a 1mm thick layer of ABS plastic. The plastic both protects the magnet from moisture and prevents damage to the magnet itself.
Fast, professional service
These magnets are so strong that it is difficult to separate them without using some kind of prying tool, my fingers alone are too weak to do it. They will do the job I purchased them for very well.
The magnets I received were shipped quickly and securely, and I had no issues with delivery. They were packed well and in good shape when I received them. I noticed no defect with the magnets and I I was able to use them exactly as I intended on back of a piece of jatoba for a magnetic knife strip. I routed a track to 1/8” and glued and epoxied the magnets in place. The magnets provide sufficient pull strength to hold knives without being too energetic about grabbing them from the hand. These met my need precisely and I would purchase again if I decide to make more of these magnetic knife holders.
I used the magnets on a wooden toy box for my grandson. Easy to install and the perfect strength. I will be buying different sizes for other projects.
Ordered these magnets for a project that I was working on. Received as stated & described, the magnets are what I was looking for. Will order from them again.
Used this for a hobby project I’m working on and the magnets held my project together very well. The finish on them were uniform and packaged them very well. They were shipped and received very timely and will be re-ordering more.
Good customer service, great price & quick to ship
I was hoping to find a strong, low profile magnet to use on my project - which is a restoration of a WWII Army Footlocker. I wanted to attach some old photos and postcards to the underside of the lid, but without using any permanent adhesives which may have affected my paint job. These worked perfectly!
Just what I needed and at the right price.....
Will purchase more when needed.
Have used before & reordered magnets for customized windows alarm contacts. Work fantastic & slim profile allowing no issues opening & closing windows.
me use these to stop 1/24 scale drag racing slot cars !!
1/2 x 1/8 Inch Strong Neodymium Rare Earth Disc Magnets N52 (24 Pack)