Custom PVC/EVA tube magnetic closure structures, magnet spacing and specifications for bags, pouches and soft goods.

For buyers searching for a Magnetic Zipper Closure, Richarms offers a clearly defined alternative: discrete neodymium magnets arranged inside a flexible PVC or EVA tube. This hidden magnetic attachment creates an intuitive closing action for bags, pouches, sleeves, pockets, apparel and other soft products.

Unlike a conventional toothed zipper, this customizable component has no zipper teeth or slider. Instead, we select the tube, magnet size, internal spacing and finished length according to the fabric, bend radius, target holding force, opening feel and assembly method.

Magnetic Zipper Closure Structure Explained

• Flexible outer tube: We use PVC or EVA according to the required size and application.
• Internal magnetic elements: The tube contains discrete cylindrical neodymium magnets.
• Optional spacer: We can add silicone or PVC spacer sections to adjust flexibility and closing force.
• Construction: This design uses a non-heat-shrink flexible tube. We apply end treatment only when the finished specification requires it.

Therefore, the product is best understood as a flexible magnetic closure strip. “Magnetic Zipper Closure” describes the buyer’s application, not a conventional zipper mechanism.

Three Internal Arrangement Options

MSM – One Magnet + One Spacer

MSM offers more flexibility. For example, it can suit curved edges, lightweight fabrics and projects that need an easier opening feel.

Magnetic zipper closure cross-section with two magnets then silicone spacer (MM–S repeat) inside a flexible tube.

Magnetic zipper closure sample strip with spaced magnet segments visible inside a clear flexible tube.

MMS – Two Magnets + One Spacer

MMS balances holding force and flexibility. As a result, it works well as a starting point for general bag, pouch and sleeve testing.

Magnetic Zipper Closure Structure C (M–S Alternating Core)

Magnetic zipper closure in bulk production: full-magnet core for strongest closure performance.

MMM – Continuous Discrete Magnets

MMM places individual magnets close together for higher holding force. However, customers should test the final design against the product structure and intended opening force.

Magnetic Zipper Closure Structure B (Full-Magnet Core)

Magnetic zipper closure in bulk production: full-magnet core for strongest closure performance.

Typical Reference Specifications

• Magnet options: 3 × 6 mm N35 or 3 × 10 mm N52
• Typical finished outside diameter: approximately 3.5 mm, depending on the selected tube and internal structure
• Length: sample lengths and project-specific cut-to-length production
• Customization: magnet grade, holding force, tube material, diameter, length, spacing pattern, color and end treatment

These values are references rather than universal specifications. Consequently, we confirm final dimensions, materials and performance through sample testing in the customer’s actual product.

Why Choose This Magnetic Zipper Closure Alternative?

• Self-aligning and intuitive closing action
• Hidden integration inside fabric channels or product edges
• Quiet operation with no exposed teeth or hard metal slider
• Flexible options for straight or curved openings
• Customizable holding and release feel
• Repeatable production after application validation

Magnetic Zipper Closure Applications

Typical applications include handbags, backpacks, organizer pouches, laptop and tablet sleeves, pockets, apparel openings and storage products. In addition, designers can use the strip in other soft goods that need a concealed magnetic closure.

Magnetic Zipper Closure Installation & Development

Customers typically insert the strip into a sewn channel or designed cavity, much like installing a cord inside a fabric edge. First, confirm the channel size and polarity direction. Next, test the bend radius, opening path and end treatment in the finished product.

Our recommended process is simple: share your drawing, sample or application idea; select an initial structure; test a sample in the real product; and then confirm the production specification.

Magnetic Zipper Closure FAQs

Is this a magnetic zipper?

Some buyers use “Magnetic Zipper Closure” as an application term. Structurally, this product is a flexible PVC/EVA tube containing discrete magnets, with optional silicone or PVC spacers. It does not use conventional zipper teeth or a slider.

Which structure should I choose?

MSM prioritizes flexibility, MMS balances flexibility and holding force, and MMM provides higher holding force. Therefore, choose the structure according to the fabric, opening direction, bend radius and target release force.

Can Richarms customize the length and magnetic force?

Yes. We can develop the length, magnet size and grade, spacing pattern, tube material, color and end treatment around the application.

What temperature is suitable?

Standard versions suit normal-use environments up to approximately 80°C. For higher-temperature projects, we confirm a separate material and magnet specification.

Can I order samples?

Yes. We recommend sample testing before production because the complete product design determines the finished opening feel.

Start with an Application Review

Send Richarms your drawing, sample, target length, fabric or substrate, desired holding force and opening method. Then, we will recommend the minimum practical configuration for testing before mass production.

Materiale: NdFeB (Neodymium)
Shape Options: Disc, Cylinder, Block, Ring, Countersunk, Segment, Trapezoid, and more custom shapes
Magnetization Direction: Thickness Magnetized o Radially Magnetized (customizable)
Coating Options: Nickel (Ni), Zinc (Zn), Gold, Silver, Copper, Epoxy and more
Size and Tolerance: Custom sizes with tolerances ranging from +/-0.03mm to +/-0.15mm
Working Temperature: Maximum operating temperature up to 230°C based on grade
Consegna: Small order available, Available by sea, air, o express delivery

NdFeB magnets securely packaged in small white boxes, ensuring safe transport and easy handling.

Imballaggio:

NdFeB magnets undergo a careful de-magnetization packaging process, involving layers of iron boxes, foam, and paper boxes to ensure secure transport.

Understanding the two magnetization directions for NdFeB magnets: Thickness Magnetized and Radially Magnetized.

Magnetization Direction:
Thickness Magnetized
Radially Magnetized

Key Features of Segment NdFeB Magnets:

• Customizable for Industrial Applications: Il nostro Segment NdFeB magnets are highly versatile and can be customized in terms of size, shape, magnetization direction, and coating. They are designed to meet your specific application needs in industrial settings.
• High-Performance and Temperature Resistance: These magnets offer exceptional forza magnetica and can withstand a wide range of temperatures, with certain grades reaching up to 230°C in ambienti ad alta temperatura. Perfect for applications in motors, sensori, e dispositivi elettronici.
• Available in Various Shapes: Choose from a wide range of shapes such as discs, cylinders, blocks, e segments, with custom designs available for more specialized requirements. Whether you need a trapezoid, ring, o countersunk magnet, we’ve got you covered.
• Efficient Delivery: With flexible delivery options, we ensure timely shipping via sea, air, o express services to meet your project timelines.

Why Choose Our Segment NdFeB Magnets?

• Custom Magnetization: Il nostro Segment NdFeB magnets can be magnetized in different directions, including thickness o radial magnetization, to suit your specific application.
• Durable and Reliable: With a variety of coatings such as nichel, zinc, oro, e epoxy, these magnets are protected against corrosion, ensuring long-term durability.
• Superior Strength and Efficiency: Known for their forti proprietà magnetiche, Magneti NdFeB provide excellent performance across a wide range of industries, including elettronica, automotive, manufacturing, e energy.

Bar NdFeB magnets can be encased in heat-shrink tubing, providing extra protection. Questo heat-shrink wrap makes the magnets waterproof, shock-resistant, e oxidation-proof, ensuring they remain in optimal condition even in harsh environments. This added layer of protection increases their durata e affidabilità per long-term use in a wide range of applications.

NdFeB magnets securely packaged in small white boxes, ensuring safe transport and easy handling.

Imballaggio:

NdFeB magnets undergo a careful de-magnetization packaging process, involving layers of iron boxes, foam, and paper boxes to ensure secure transport.

Understanding the two magnetization directions for NdFeB magnets: Thickness Magnetized and Radially Magnetized.

Key Features of Bar NdFeB Magnets:

• Customizable for Various Applications: Il nostro Bar NdFeB magnets are highly customizable in size, shape, magnetization direction, and coating. Whether you need smaller sizes per Blocco RFID, larger sizes per industrial machinery, or specific magnetization patterns, we can meet your needs.
• High-Strength Performance: Questi NdFeB bar magnets are known for their high magnetic strength, making them ideal for applications like bag closures, purse clips, journal covers, e IC parts.
• Durable and Reliable: With a variety of protective coatings like nichel o epoxy, these magnets are designed to last, offering long-term durability e resistance to corrosion.
• Efficient Delivery: We offer flexible delivery options, ensuring you receive your Bar NdFeB magnets quickly and securely. Choose from sea, air, o express shipping to meet your project deadlines.

Applications of Bar NdFeB Magnets:

• Bag Closures: Perfect for use in chiusure magnetiche per bags, purses, e backpacks, ensuring easy-to-use, secure fastening.
• Purse Clips & Journal Covers: These magnets are ideal for securing purse clips e journal covers, offering a sleek, reliable solution.
• IC Parts: With customizable sizes and strength, Bar NdFeB magnets are great for use in IC parts, ensuring precision and high performance in sensitive equipment.

Why Choose Our Bar NdFeB Magnets?

• Versatile Customization: Choose the perfect size, shape, e magnetization direction for your specific application needs.
• Superior Strength: Known for their exceptional magnetic power, Bar NdFeB magnets offer high holding force in various industrial applications.
• Cost-Effective Solutions: Get magneti ad alte prestazioni at competitive prices, ideal for wholesale orders and bulk production.

Imballaggio:

Magnetization Direction:
Thickness Magnetized
Radially Magnetized

How to make stronger power button?
– Magnets in same size, material better, power stronger
– Magnet in same material, size bigger, power stronger

Which silver color is better? Zinc or Nickel Plating?
– Zinc will be at lower cost
– Nickel will be shiny, and easy to pull out

What’t packaging will Richarms offer?
– for big size magnet, we might suggest to add divider so that customer will easy to pull out each one
– Standard Packaging is plastic bag + box + carton
– Degaussing Packaging is plastic bag+box+form box+carton, for some voyage ask no magnetic power tested on the outer box

Want quick quote or free sample, pls consult our sales teams 

Custom NdFeB Ring Magnets from a China Factory

Custom NdFeB ring magnets are engineered by Richarms for global B2B projects.

We turn drawings, samples and product ideas into manufacturable magnetic solutions, balancing size, magnetic force, coating, tolerance and budget.

Shape, Size and Magnetization Options

Specify the outer diameter, inner diameter, thickness, grade, magnetic force and magnetization direction. We can also evaluate non-standard and irregular shapes for your assembly.

More Than a Standard Magnet Supplier

Richarms supports design review, prototyping and production so your magnetic concept can meet functional and cost targets. Explore our custom magnet range o contact our magnetic solution team for a project review.

Cylinder magnet can be encased in heat-shrink tubing, providing extra protection. This heat-shrink wrap makes the magnets waterproof, shock-resistant, e oxidation-proof, ensuring they remain in optimal condition even in harsh environments. This added layer of protection increases their durata e affidabilità for long-term use in a wide range of applications.

Uncoated raw strong cylinder magnet showcasing its robust NdFeB core for custom applications.

Imballaggio:

NdFeB magnets securely packaged in small white boxes, ensuring safe transport and easy handling.

NdFeB magnets undergo a careful de-magnetization packaging process, involving layers of iron boxes, foam, and paper boxes to ensure secure transport.

Understanding the two magnetization directions for NdFeB magnets: Thickness Magnetized and Radially Magnetized.

Caratteristiche principali:

• Waterproof: The ABS coating provides reliable water resistance for outdoor and harsh environments.
• Shatter-Proof & Rust-Proof: Durable encapsulation protects the magnet against impact and corrosion.
• Versatile Use: Suitable as a raw magnet or as an encapsulated solution for hidden magnet applications in bag hardware and other custom products.
• Eco-Friendly: Made with environmentally conscious ABS material, ensuring a sustainable and robust product.

Overview:
Our Encapsulated Strong Magnet Cylinder offers exceptional magnetic strength in a compact design. Engineered from premium NdFeB and encapsulated in eco-friendly ABS, this magnet is designed to withstand water, impacts, and corrosion. Its sleek finish—available in standard black or white, with custom color options—makes it perfect for a wide range of applications including hidden magnet systems, bag hardware, and various industrial uses.

Ideal Applications:

• Hidden magnet applications in custom bag hardware
• Industrial and consumer products requiring robust magnetic solutions
• Accessories and components where a sleek, durable magnet is essential

Ready to integrate this high-performance magnet into your product designs? Contact us at info@richarms.com or visit Negozio online Richarms to place your order or request a sample.

Custom Cylinder Magnets from a China Factory

Custom cylinder magnets are developed by Richarms for global B2B assemblies. We convert your drawing, sample or idea into a practical solution matched to function and budget.

Diameter, Height and Magnetic Direction

Customize diameter, height, grade, magnetic force, coating, tolerance and magnetization direction for your application.

Engineering and Production Support

From sample validation to volume manufacturing, our team helps reduce development risk. Browse custom magnet options o request a project review.

Magneti NdFeB ad alte prestazioni NdFeB Magnets from Richarms are customized for industrial and product-development projects. Specify length, width, height, grade, coating, magnetic force and magnetization direction for a production-ready solution.

High-Performance NdFeB Magnets for B2B Applications

As a professional magnetic solutions factory in China, Richarms supports design review, sampling and volume production. Explore related products or contact Richarms for a solution matched to your performance and cost targets.

Imballaggio:

Direzione di magnetizzazione

Custom Block NdFeB Magnets from a China Factory

Custom block NdFeB magnets from Richarms turn drawings, samples and product ideas into production-ready magnetic solutions for global B2B customers.

Dimensions, Force and Magnetization

Specify length, width, height, grade, magnetic force, coating, tolerance and magnetization direction. Our team balances performance, assembly requirements and budget.

Your Magnetic Solution Partner

Richarms supports design review, samples and volume production. Explore our custom magnets o send us your project.

Custom High-Performance NdFeB Magnets Specifications

Every High-Performance NdFeB Magnets project can be reviewed around material thickness, installation space, holding force, appearance and order quantity. Richarms recommends a practical High-Performance NdFeB Magnets configuration, prepares samples and supports stable B2B volume production.

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.
• Copertine per diari in pelle: 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 Negozio Shopify.

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

Pacchetto: pacchetto

1 set = 1 “+”, 1 “-“, or customer can only order 1 pole

Grade:
N30 N35M-N52M, N35H-N50H, N33SH-N45SH

Finiture: finiture
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.

Applicazione: applicazione

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 o contact our China factory.