Waterproof Neodymium Magnets

Neodymium Magnets 03/15/2021

waterproof neodymium magnets

Water-resistant rubber-coated neodymium magnets

These neodymium magnets are completely covered with a rubber layer providing the following benefits: water-resistance and protection against scratching.

Due to the rubber coat, the maximum adhesion force of these magnets is slightly lower than that characteristic of non-coated neodymium magnets of a similar size.

These neodymium magnets are completely covered with a rubber layer providing the following benefits:

Water resistance: these magnets are rust-resistant (i.e. resistant against corrosion) so they can be used also in outdoor and/or humid environments.

Protection against scratching: protection of sensitive surfaces such as boards or glass magnetic boards.

Online sale of magnets

wholesale neodymium magnets

ALB-D84PC-PNK

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-BX084PC-PNK

• NdFeB, Grade N42
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 8.26 lbs

ALB-D8APC-BLK

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 5/8" thick
• Pull force: 5.79 lbs

ALB-D84PC-BLK

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D68PC-RB

• NdFeB, Grade N42
• Dimension: 3/8" dia. x 1/2" thick
• Pull force: 2.51 lbs

ALB-RX436DCSPC-BLK

• NdFeB, Grade N42
• Dimension: 1 1/4" od x 0.221" id x 0.402" id x 3/8" thick w/ hole to accept #10 screws
• Pull force: 20.49 lbs

ALB-RX034DCSPC-BLK

• NdFeB, Grade N42
• Dimension: 1" od x 0.194" id x 0.349" id x 1/4" thick w/ hole to accept #6 screws
• Pull force: 9.56 lbs

ALB-RC24DCSPC-BLK

• NdFeB, Grade N42
• Dimension: 3/4" od x 0.136" id x 0.242" id x 1/4" thick w/ hole to accept #4 screws
• Pull force: 6.61 lbs

ALB-BY0X08DCSPC-BL

• NdFeB, Grade N42
• Dimension: 2" x 1" x 1/2" thick w/ holes to accept #8 screws
• Pull force: 42.76 lbs

ALB-BX8C6DCSPC-BLK

• NdFeB, Grade N42
• Dimension: 1 1/2" x 3/4" x 3/8" thick w/ holes to accept #6 screws
• Pull force: 26.34 lbs

ALB-BX0X08DCSPC-BL

• NdFeB, Grade N42
• Dimension: 1" x 1" x 1/2" thick w/ hole to accept #8 screws
• Pull force: 27.3 lbs

ALB-B888PC-GRN

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-ORA

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-PUR

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-RED

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-AST

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-BLK

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-BLU

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-WHT

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888PC-YEL

• NdFeB, Grade N42
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-B888TP-N52

• NdFeB, Grade N52
• Dimension: 1/2" x 1/2" x 1/2" thick
• Pull force: 7.01 lbs

ALB-BCC4DCSPC-BLK

• NdFeB, Grade N42
• Dimension: 3/4" x 3/4" x 1/4" thick w/ hole to accept a #6 screws
• Pull force: 8.14 lbs

ALB-BX084PC-BLK

• NdFeB, Grade N42
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 8.26 lbs

ALB-BX084PC-BLU

• NdFeB, Grade N42
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 8.26 lbs

ALB-BX084PC-RED

• NdFeB, Grade N42
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 8.26 lbs

ALB-BX084PC-WHT

• NdFeB, Grade N42
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 8.26 lbs

ALB-BX084TP-N52

• NdFeB, Grade N52
• Dimension: 1" x 1/2" x 1/4" thick
• Pull force: 9.94 lbs

ALB-BX0X06TP-N52

• NdFeB, Grade N52
• Dimension: 1" x 1" x 3/8" thick
• Pull force: 24.41 lbs

ALB-D84PC-AST

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-BLU

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-GRN

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-ORA

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-PUR

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-RB

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-RED

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-WHT

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-D84PC-YEL

• NdFeB, Grade N42
• Dimension: 1/2" dia. x 1/4" thick
• Pull force: 3.45 lbs

ALB-DC6PC-BLK

• NdFeB, Grade N42
• Dimension: 3/4" dia. x 3/8" thick
• Pull force: 10.86 lbs

ALB-DC6PC-BLU

• NdFeB, Grade N42
• Dimension: 3/4" dia. x 3/8" thick
• Pull force: 10.86 lbs

ALB-DC6PC-RED

• NdFeB, Grade N42
• Dimension: 3/4" dia. x 3/8" thick
• Pull force: 10.86 lbs

ALB-DC6PC-WHT

• NdFeB, Grade N42
• Dimension: 3/4" dia. x 3/8" thick
• Pull force: 10.86 lbs

ALB-DC6TP-N52

• NdFeB, Grade N52
• Dimension: 3/4" dia. x 3/8" thick
• Pull force: 13.12 lbs

ALB-DX08TP-N52

• NdFeB, Grade N52
• Dimension: 1" dia. x 1/2" thick
• Pull force: 28.31 lbs

ALB-RX054TP-N52

• NdFeB, Grade N52
• Dimension: 1" od x 5/16" id x 1/4" thick
• Pull force: 11.12 lbs

 

Neodymium Magnet - Black Coated. Item #: D84PC-BLK Plastic Coated Neodymium Magnets. Neodymium Rare Earth magnets. These magnets are incredibly strong! Size: 18mm x 6mm Disc (BlackWaterproof neodymium magnets polypropylene strong color.

On our website, you can buy all types of magnets and, of course, waterproof magnets. If you're not sure if you really need waterproof magnets, you can contact us.

Neodymium Magnets: How to Prevent Corrosion

Why do neodymium magnets corrode?

Iron displays the most dramatic ferromagnetic properties of all elements, which is why it is found in the most powerful magnets.

Therefore, meaning that every permanent magnet contains a form of iron.

However, iron is highly reactive to water and hence makes magnets with high iron content, like neodymium, very vulnerable to corrosion and possible demagnetization in the long run.

The strongest permanent magnets available are neodymium magnets, but because of their high iron content (64-68%), they are highly prone to corrosion in moist environments.

Modern manufacturing techniques have seen traces of other rare earth elements such as dysprosium added to the NdFeB alloy to improve resistance to corrosion as well as other magnetic properties.

Due to their vulnerability to corrosion, neodymium magnets are almost always coated before being used in any application.

Neodymium Coatings

Neodymium magnets are so prone to corrosion, that even the moisture in the atmosphere can cause them to corrode over time.

The typical coating for a neodymium magnet is a layer of nickel followed by a layer of copper and then nickel again.

However, there are a variety of different coatings available.

Below are some of the most common coatings and their characteristics.

1. Nickel (Ni-Cu-Ni)

The most commonly used coating

Nickel has a good price/performance ratio

Thickness: approx. 12 micrometers

Colour: shiny metallic

Razor-thin coating over normal nickel coat

The thickness of gold-coating without nickel: 0.05 micrometer

The thickness of the whole coating: approx. 12 micrometers

Colour: shiny metallic

Gold-coating rubs off easily with frequent use, therefore it is suitable for decorative purposes only.

3. Chrome (Ni-Cu-Ni-Cr)

Better resistance against rubbing and pressure, thus it's commonly used for sphere magnets

Thickness: approx. 15 micrometers

Colour: dull, grey-metallic

Slightly weaker rubbing and impact resistance than nickel

Also, slightly weaker corrosion resistance than nickel

Thickness: approx. 10 micrometers

Colour: shiny brown-red-gold.

However, the color may change over time due to rust

Like the gold-coated magnets, the copper-colored surface rubs off with frequent use.

Therefore, they are for decorative purposes only.

5. Epoxy resin (Ni-Cu-Ni-Epoxy)

Not shock-resistant, so it crumbles quickly

Almost 100% non-corrosive, if the coating is intact

Thickness: approx. 10 micrometers

Colour: black

Even the smallest damages to the coating will cause damage to the magnet in the long term when exposed to moisture.

What about samarium cobalt magnets?

Samarium cobalt magnets have a significantly higher level of resistance to corrosion even without a protective coating.

However, most SmCo magnets are still coated, but this is largely for visual or application-specific reasons.

With their higher levels of resistance, SmCo magnets are widely used in offshore applications when they are constantly exposed to extremely harsh environments.

A lower magnetic performance but improved corrosion resistance?

Alnico and Ferrite magnets both resist corrosion naturally, but they dont have anywhere near the same level of magnetic performance as samarium cobalt and neodymium magnets.

Some grades of Alnico magnets do contain traces of iron and therefore will display some light surface corrosion over time if exposed to water.

I want to use neodymium magnets in the aquarium to hold frag racks, powerheads, and such. I've seen products like this so I'm sure it can be ...

I got some of the epoxies coated 30lbs magnets, 300 for 500$.

I attached 2 to the back of an MJ sure flow mount encased in aquatic epoxy putty.

2 more are on the other side of the glass.

I'd say it's much stronger than suction cups (and more reliable) and fairly stronger than a small mag float.

after playing around with them a little I noticed that the epoxy chips easily, and the force that they attract is quite strong so care must be taken when using them on an aquarium.

i think I could have made the epoxy putty thinner and gotten more strength but I am pleased with the results, too much force might result in a chipped or cracked glass.

at 2$ a magnet I spent 8$ on this DIY and have supplies left over for a frag rack, clam box, or another magnet powerhead mount.

thank goodness I didn't spend that 350$ on the sure flow mag mount

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