Description
Product Overview
The Burnur Ferrite Ring Magnets with Holes are precision‑engineered ceramic magnets designed for versatility across home, office, educational, and industrial environments. Each magnet measures 35mm in outer diameter, 25mm in inner diameter, and 5mm in thickness, providing a donut‑shaped profile that fits a wide range of applications. Constructed from high‑grade ferrite material, these magnets deliver strong, consistent magnetic force while resisting demagnetization, corrosion, and oxidation. The set includes 30 individually packaged pieces, ensuring you have enough inventory for bulk projects or repeated use. Their compact size makes them easy to store, and the central hole allows for integration with rods, bolts, or custom fixtures, expanding their functional possibilities.
![[Product front view showing all components]](https://www.richmart.store/wp-content/uploads/2026/07/8f7f8c0843ca4246bc13128089860baa.jpg)
Usage
These ring magnets excel in everyday scenarios such as securing notes, photos, and reminders on refrigerator doors, metal cabinets, and whiteboards. In educational settings, they serve as reliable components for physics experiments, magnetic field demonstrations, and hands‑on science kits. Craft enthusiasts appreciate the ability to embed the magnets into DIY projects, including magnetic jewelry, custom closures, and interactive displays. In the office, they provide a tidy solution for organizing metal clips, holding tools, and creating modular storage systems. Their robust magnetic strength also supports industrial tasks like holding metal parts during assembly, aligning components, or acting as temporary fasteners in prototyping environments.
Why Choose Us
Burnur is a trusted manufacturer known for rigorous quality control and consistent performance. Each magnet undergoes multiple testing stages to verify magnetic strength, dimensional accuracy, and surface integrity. Our commitment to durability means the magnets retain their pull force over years of use, even in humid or temperature‑fluctuating conditions. We source raw ferrite from reputable suppliers and employ a sintering process that minimizes impurities, resulting in a product that resists rust and oxidation. Additionally, our packaging includes clear labeling and protective cushioning to prevent damage during shipping. Should you encounter any issues, our responsive customer support team is ready to assist with replacements, technical guidance, or bulk order inquiries.
Key Features
- Strong magnetic pull suitable for holding metal objects securely.
- Durable ceramic composition resists corrosion, demagnetization, and wear.
- Convenient 35mm outer diameter with 25mm inner hole for versatile mounting options.
- Compact 5mm thickness makes them easy to integrate into tight spaces.
- Responsive customer support and hassle‑free replacement policy.
FAQ
Can these magnets be used on glass surfaces?
No, ferrite magnets only attract ferromagnetic materials such as iron, steel, and nickel. They will not stick to glass, wood, or plastic.
Are the magnets safe for children?
While the magnets are non‑toxic, they are fragile and can break if dropped. Keep them away from small children and pets to avoid accidental ingestion of broken pieces.
What is the recommended storage method?
Store the magnets in a dry, non‑magnetic container away from strong electromagnetic fields. Keeping them separated from other metal objects prevents accidental scratching or chipping.
Do the magnets lose strength over time?
Burnur’s ferrite magnets are engineered for long‑term stability. Under normal indoor conditions they retain their magnetic force for many years.
Can I purchase a larger quantity for industrial use?
Yes, bulk orders are available. Contact our sales team for pricing and lead‑time details tailored to your project requirements.







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