Epoxy Coated Neodymium Magnets

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Epoxy coated magnets feature a durable black coating that resists moisture, chemicals, and salt spray—ideal for outdoor, marine, and sensor applications.

Chosen for long-term corrosion protection and reliable performance in demanding environments. Offered in select shapes and grades.

Need a different size, shape, or quantity? We currently stock a very limited selection of Epoxy Coated Magnets. Custom coatings, shapes, and sizes are available to match your environment and tolerances. Request a Custom Quote.

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Magnet Coating Specifications

Compare thickness, corrosion resistance, and operating temperatures on our Magnet Coatings Specifications page.

Typical thickness: Thin to moderate
Corrosion resistance: Excellent in wet or salty environments
Surface finish: Black or dark, smooth coating
Electrical properties: Non-conductive

Custom Solutions

Need variants not shown here? We support custom coatings, sizes, and assemblies—plus validation testing—for prototyping or production.

Submit a Custom Magnet Request Form
Contact Us for engineering support

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Frequently Asked Questions

Are epoxy coated magnets fully waterproof?

They are highly resistant to moisture but should still be evaluated for your
application’s exact exposure conditions.

Can epoxy coatings chip or wear?

Over time, epoxy coatings can wear under abrasion. Consider encapsulation for
extreme wear applications.

Are epoxy coated magnets suitable for outdoor use?

Yes, they perform well outdoors and in marine environments due to their excellent
corrosion resistance.

Does epoxy coating add thickness?

Yes, but the added thickness is minimal and typically does not affect fit or performance for most designs.

Can you produce custom sizes, magnetization direction or coatings?

Yes. Through our engineering division, SM Magnetics, we can design and manufacture custom sizes, magnetization directions, and specialized coatings. You can either submit a custom request form or contact us directly to speak with our experts.