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China Courage Magnet Manufacturer

14 Years High Performance Permanent Magnet Supplier & Factory


Waterproof Epoxy Coated Neodymium Rectangular Magnets 30 x 20 x 5 mm

Material:Rare Earth Neodymium/NdFeB

Shape:Block, Rectangular


Grade:N35-N52 M H SH UH

Coating:Epoxy(Nickel,Zinc,Gold,etc coatings are available)


Packing:Neutral Packing or Specified Requirements

Pull Force:8kg

Delivery Time:15-25 days

Place Of Origin:Dongguan,Guangdong Province,China

Working Temperature:80℃(highest 220ºC for neodymium material)

Magnetizing Direction:Thickness

Surface Magnetic Strength:> 2700 Gauss

  • Product Details
  • Why Choose Us
  • FAQs
  • Packing & Delivery

This sample is a rectangular neodymium magnet with a waterproof and rust resistant coating of black epoxy on the surface, which can effectively protect rare earth neodymium magnets. The magnet has a length of 30mm, a width of 20mm, and a thickness of 5mm. The default thickness is magnetization. If you need other sizes and do not like this black coating, you can choose another one. We can meet your requirements.

About Epoxy Coating:

Epoxy coating is a coating made of epoxy resin and hardener. Often chosen as a metal coating, epoxy coatings bind well to metal surfaces to form a hard, durable barrier that can withstand a variety of chemicals and environmental conditions. They also have excellent adhesion properties, which means they are effective at protecting metal surfaces from corrosive substances without peeling or cracking over time. For example, ndfeb magnet itself is easy to corrosion and oxidation, through the epoxy coating can make NdFeb magnet waterproof, rust resistant, corrosion resistant.Compared with other anticorrosion technology, epoxy resin is a kind of cost-effective corrosion solution, because it can protect the surface of a long time.

Application of rectangular neodymium magnet(30 x 20 x 5mm):

Widely used in :DIY, scientific experiment equipment, production and manufacturing, mechanical equipment, smart home, various industries, etc.

Related black epoxy coated magnets are described;

Epoxy magnets are not only black but also many color

5mm thick rectangular neodymium magnets are recommended;

10mm length black coated neodymium magnet block 10x5x5mm

Galvanized block neodymium magnet 38mm x 30mm x 5mm

Dongguan Courage Magnetoelectric Technology Co., Ltd. is a Chinese magnet manufacturer specializing in the production of strong neodymium magnets, ceramic ferrite magnets, motor multipole magnets. We have cooperated with many customers for many years, mainly for the following reasons:

1, we are good at processing high performance, high precision, high difficulty magnet, especially in the field of DC motor magnet, have strong professional knowledge, experience.

2, We have a professional production, sales, design team, based on the industry for more than 14 years.

3, we have advanced magnet production and testing equipment, according to customer requirements to design, production of special requirements of magnet products,

4. The company's products have passed SGS, ROHS, REACH certification and a complete ISO9001 quality management system, specializing in providing high-quality permanent magnet products to customers in various countries.

5. Experience in serving Western, Asian and North American companies, we also have close ties with other regions, fedex or DHL can deliver,

6, Even if our customers do not know much about magnets, we will help and provide accurate product solutions.

You may be interested in these magnet problems (Q&A) ;

1、Could you give me some magnet samples?

Yes, we have magnets in stock to help you get samples as soon as possible.

2、How long will it take me to get a reply to your email or inquiry?

We will contact you as soon as possible within 12 hours.

3、Why don't the magnets on your company website say the price?

Magnets belong to functional products, most customers have different requirements for magnets, such as material, shape, performance, tolerance, temperature resistance, purchase quantity, etc., we can customize processing according to your requirements, so we need to clarify your specific needs and then give you a quote.

4、Do you guarantee the quality of your magnet products?

We have ISO,SGS and REACH certifications. If necessary, we can send you relevant materials.

5、May I come and visit your magnet factory?

Sure. We'll show you around our factory if you want.

6、What is your delivery time?

See if there is spot stock, if there is immediately can be arranged to send, if there is no need to process in 10-30 days or so, depending on what kind of magnet.

More Questions and Answers about Magnets:

Courage magnet manufacturer magnet packaging and delivery method:

China Courage magnet manufacturer magnet packaging and delivery method

The magnets we make are mainly delivered to you by sea or air. The packaging is generally neutral packaging, shielded packaging, vacuum packaging, pallets, etc., which can be packed according to your requirements.


a: Express (TNT, DHL, FedEx, UPS, etc.), air freight, sea freight.

b: The weight is less than 40Kgs. We suggest sending it to you by shield box.

c: It weighs between 40 kg and 100 kg. It can be expressed or shipped by air.

d: The weight is over 100 kg. We suggest sea transportation.

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