Black Rubber-Coated Pot Magnets for Industrial Mounting
Our rubber coated pot magnets use a high-grade NdFeB (neodymium-iron-boron) core housed in a steel cup, then finished with a black protective rubber coating. The coating protects surfaces from scratching, absorbs impact and vibration, and increases grip on rough or painted metal. These magnets support demanding industrial mounting, signage, tooling and fixtures where reliability and cleanliness of the surface matter.
Key Specifications

- Core Material: NdFeB (neodymium-iron-boron)
- Housing: Steel pot structure around magnet core
- Coating: Black rubber sleeve – protects surface, reduces vibration and wear
- Styles: Choose from 3 styles (e.g., internal thread style, external thread style, flat mount style)
- Custom Sizes: Diameter options such as φ22 mm, φ34 mm, φ36 mm, φ43 mm, φ66 mm, φ88 mm; other sizes customizable.
- Thread Options: Internal female thread, external thread, flat mount style as per mounting requirements.
- Magnetic Grades: Standard N35 – N52 (higher grades upon request)
- Breakaway / Pull Force (examples): For D66 size ~20 kg, for D88 ~42 kg.
- Temperature Range: Standard operation up to ~80 °C; some rubber-coated versions rated up to ~200 °C. greatmagtech.com
- Coating Thickness: Black rubber approx. 0.03 in (~0.8 mm) thick.
- Tolerance & Finish: Custom tolerance available; manufacturing under export packing, suitable for bulk supply.
Applications
These magnets are ideal when you need strong holding power but cannot allow surface damage:
- Industrial machine fixtures and mounting blocks
- Automation lines and tooling jigs requiring clean contact surfaces
- Signage and panels mounted on painted steel where no scratching is acceptable
- Workshop tool holders and magnetic bases that need re-usable and non-marring mounts
- Offshore, marine or outdoor equipment where corrosion resistance plus surface protection matter

Customization & Bulk Orders

We support OEM customization-you can request diameter, height, style (internal thread/external/flat), coating thickness, magnet grade, and mounting finish. Our production system is set up for bulk orders with consistent quality, batch traceability and export packaging.
Sample Testing & Order Process
To reduce the risk for your production, we provide sample units for testing. Share your specs-size, style, thread, coating requirement-and we will provide a sample and quotation. After your sign-off, we proceed to production and dispatch under agreed schedule.
Handling & Safety Notes
Strong magnets can pinch, attract metal debris, and interfere with electronics or pacemakers. Ensure clean contact surfaces for maximum adherence. The rubber coat provides impact cushioning and surface protection but does not eliminate the need for safe handling practice.

Why Choose Our Rubber-Coated Pot Magnets
- Strong magnetic performance from NdFeB core
- Protective black rubber coating preserves surface integrity
- Variety of styles and fully customizable sizes
- Support for bulk supply and OEM projects
- Industrial mounting solution engineered for durability

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