Cost-effective sew-in hidden magnets with metal caps and waterproof film. Custom magnetic force, color, marking and size for global B2B projects.
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Description
Sew In Hidden Magnet | Durable, Waterproof Sewable Magnets | Richarms
Richarms offers innovative Sew In Hidden Magnets, expertly designed with a high-performance single-pole magnet sealed securely within waterproof plastic casings, including durable PVC and flexible, soft-touch TPR. These versatile hidden magnets seamlessly integrate into fabrics, ensuring a discreet yet robust magnetic closure solution.
Our sewable hidden magnets combine convenience, elegance, and reliability. Encasing the powerful neodymium magnets in a waterproof, oxidation-resistant PVC or TPR film ensures prolonged magnet lifespan and enhanced safety—even if a magnet fractures, it remains intact and retains functionality. The magnet fragments won’t scatter, preserving magnetic power and product integrity.
Common Applications Include:
- Handbags & Wallets: Seamlessly hidden magnetic closures that maintain sophisticated aesthetics.
- Leather Journal Covers: Premium feel and easy closure without visible hardware.
- Apparel & Outerwear: Discreet closures perfect for jackets, coats, and pockets.
- Gift & Packaging: Refined, secure closures for premium gift boxes and packaging designs.
Customizing your sew-in hidden magnet is straightforward. Richarms provides extensive flexibility, allowing you to select magnetic strength, precise dimensions, and shape to meet your exact requirements.
Whether you’re a DIY enthusiast working on custom projects or a manufacturer seeking high-volume solutions, we have you covered. DIY users can easily sew in magnets directly, while professional manufacturers may prefer specialized equipment for seamless, efficient mass production.
For a tailored solution, reach out to our experts today for a personalized quote, or conveniently order directly through our Shopify Store.
Explore related products like our standard single pole magnet for additional versatility.
Our stock size will be delivered within 3 days
Disc Shape (mm): 8×2, 10×2, 12×2, 15×2, 15×3, 17×2, 17×3, 18×2, 18×3, 20×2, 20×3, 22×3, 25×3
Rectangular Shape (mm): 20x10x2,27x8x3
Other customized dimension lead time is 15-20 days
Pack:
1 set = 1 “+”, 1 “-“, or customer can only order 1 pole
Grade:
N30 N35M-N52M, N35H-N50H, N33SH-N45SH
Finitions:
Standard finish is PLAIN metal cap, PLAIN or PATTERN plastic cover, logo customized available
Regular color is Zn. Custom finishes are also available to meet your requirements.
Application:

Sew In Hidden Magnets with Metal Caps
Sew in hidden magnets use a round magnet, protective metal cap and laminated film. The single working face and firmer construction provide a practical, cost-effective closure for B2B production.
Custom Finish and Waterproof Construction
Standard metal caps include white zinc and yellow zinc combinations. Other colors, laser markings, magnetic force, magnet size and film specifications can be customized.
Designed Around Your Product
These sewable waterproof closures suit apparel, textiles, notebooks, bags, awnings and outdoor goods. Richarms turns your idea into a solution matched to function and budget. See hidden magnets ou contact our China factory.






