Magnet Coatings for Corrosion Protection

34 products

Showing 25 - 34 of 34 products

Shop magnets with specialty coatings designed for corrosion resistance, durability, and biocompatibility. Our collection includes Gold, Parylene, PTFE, Epoxy, TiN, Rubber, Chrome, and Silver plating—ideal for medical devices, laboratory use, outdoor assemblies, and other demanding applications.

Use the filters on the left to narrow your results by coating type, strength, or size to find the right solution for your project.

Showing 25 - 34 of 34 products

SuperMagnetMan Teflon Coated Rectangle Magnet. Used as medical magnets, motor magnets, automotive magnets, holding magnets, and robotics magnets. Strong rare earth neodymium magnets. www.supermagnetman.com

TEF Rect4350BT

$125.00

Sold out

4" (101.60mm) long x 3" (76.21mm) wide 0.500" (12.70mm) thick N50 Rectangle Magnet - Black PTFE Coated Minimum Order Quantity (MOQ) = 1 pc

Sphere Magnets Ball Magnets Magnetic Balls

SP0629

$1.15

In stock, 298 units

0.250" (6.35mm) diameter Sphere N52 Ball Magnets - Chrome Plated Minimum Order Quantity (MOQ) = 15 pcs This Product Not Eligible for Shipment to Canada, per Section 7 of the CCPSA

SP100352

$1.50

Sold out

0.315" (8mm) diameter Sphere N52 Ball Magnets - Chrome Plated Minimum Order Quantity (MOQ) = 6 pcs This Product Not Eligible for Shipment to Canada, per Section 7 of the CCPSA

SP1062

$4.15

In stock, 601 units

0.625" (15.88mm) diameter Sphere N40 Ball Magnets - Chrome Plated Minimum Order Quantity (MOQ) = 3 pc

SP1075

$6.50

In stock, 292 units

0.750" (19.05mm) diameter Sphere N45 Ball Magnets - Chrome Plated Minimum Order Quantity (MOQ) = 1 pc

Tube Magnets Rare Earth Magnets Neodymium Magnets

Tube0297A

$2.10 $2.95

In stock, 50 units

0.354" (9mm) OD x 0.276" (7mm) ID 0.433" (11mm) long N50 Tube Magnets - Silver plated Minimum Order Quantity (MOQ) = 3 pcs

Rectangle Magnets Neodymium Magnets Bar Magnets

Rect1020

$1.52

In stock, 878 units

1" (25.40mm) long x 0.125" (3.17mm) Wide 0.094" (2.38mm) thick N40 Rectangle Magnets - Silver Plated Minimum Order Quantity (MOQ) = 4 pcs

SP0628

$1.15

In stock, 395 units

0.250" (6.35mm) diameter Sphere N52 Ball Magnets- Silver Plated Minimum Order Quantity (MOQ) = 15 pcs This Product Not Eligible for Shipment to Canada, per Section 7 of the CCPSA

SP0700

$1.25

In stock, 5478 units

0.276" (7mm) diameter Sphere N40 Ball Magnets - Silver Plated Minimum Order Quantity (MOQ) = 15 pcs This Product Not Eligible for Shipment to Canada, per Section 7 of the CCPSA

SuperMagnetMan Neodymium Ring Magnet. Used as medical magnets, motor magnets, sensor magnets, consumer electronics magnets. These ring magnets are strong rare earth neodymium magnets also used as automotive magnets. www.supermagnetman.com

R110345H

$5.75

In stock, 8 units

1" (25.40mm) OD x 0.500" (12.70mm) ID 0.250" (6.35mm) thick N45H - Ring Magnets - Black Epoxy Coated Minimum Order Quantity (MOQ) = 1 pc

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Frequently Asked Questions

Why do neodymium magnets require coatings?

Neodymium magnets are prone to corrosion and surface damage if left uncoated. Coatings protect the magnet material from oxidation, chemicals, and wear—ensuring long-term performance and dimensional stability.

How do I choose the right coating?

Consider your environment (dry, humid, chemical exposure), mechanical stresses (abrasion, impact), electrical needs (conductive or insulated), and any biocompatibility requirements. Our Magnet Coating Specifications chart can help guide your selection.

Can coated magnets be sterilized or cleaned?

Many coatings, including Parylene and Gold, are compatible with cleaning and sterilization processes. For critical medical or food-grade applications, confirm compatibility with your process before production.

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.