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MP 25x8x20 / N38 - ring magnet

ring magnet

Catalog no 030450

GTIN/EAN: 5906301812340

5.00
Load capacity 19.02 kg / 186.54 N Magnetic Induction 525.50 mT / 5255 Gs
Diameter
25 mm [±0,1 mm]
internal diameter Ø
8 mm [±0,1 mm]
Height
20 mm [±0,1 mm]
Weight
66.09 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see parameters »

33.91 zł net / pcs

41.71 zł with VAT (23% VAT) / pcs

price for transport

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Net
Gross
price from 1 pcs
33.91 zł
41.71 zł
price from 20 pcs
31.88 zł
39.21 zł
price from 80 pcs
29.84 zł
36.70 zł

Frequently asked questions

What is the hole in a ring magnet for?
For mounting on a screw or a shaft. The bore may be cylindrical or countersunk for a screw head. The hole removes magnet volume, so a ring holds less than a disc of the same outside diameter.
What is the polarisation?
Axial as standard — poles on the flat faces of the ring. Diametrical polarisation is made to order.
What sizes are available?
Outside diameter from 5 to 62 mm from stock. To order up to 200 mm outside diameter, 180 mm bore and 40 mm height, with a lead time of 25–35 days.

Guides from the knowledge base

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

PDF report Calculator
Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

Technical - MP 25x8x20 / N38 - ring magnet

Specification / characteristics - MP 25x8x20 / N38 - ring magnet

properties
properties values
Cat. no. 030450
GTIN/EAN 5906301812340
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter 25 mm [±0,1 mm]
internal diameter Ø 8 mm [±0,1 mm]
Height 20 mm [±0,1 mm]
Weight 66.09 g
Magnetization Direction ↑ axial
Load capacity ~ ? 19.02 kg / 186.54 N
Magnetic Induction ~ ? 525.50 mT / 5255 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MP 25x8x20 / N38 - ring magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Physical modeling of the magnet - data

Presented data are the result of a mathematical analysis. Values were calculated on algorithms for the material Nd2Fe14B. Real-world parameters may differ. Use these calculations as a supplementary guide during assembly planning.

Table 1: Static force (pull vs distance) - characteristics
MP 25x8x20 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 5777 Gs
577.7 mT
 19.02 kg / 41.93 lbs
19020.0 g / 186.6 N
 dangerous!
1 mm 5310 Gs
531.0 mT
 16.07 kg / 35.42 lbs
16067.7 g / 157.6 N
 dangerous!
2 mm 4846 Gs
484.6 mT
 13.38 kg / 29.50 lbs
13380.1 g / 131.3 N
 dangerous!
3 mm 4397 Gs
439.7 mT
 11.02 kg / 24.29 lbs
11019.3 g / 108.1 N
 dangerous!
5 mm 3576 Gs
357.6 mT
 7.29 kg / 16.07 lbs
7287.1 g / 71.5 N
 strong
10 mm 2073 Gs
207.3 mT
 2.45 kg / 5.40 lbs
2448.1 g / 24.0 N
 strong
15 mm 1231 Gs
123.1 mT
 0.86 kg / 1.90 lbs
863.8 g / 8.5 N
 low risk
20 mm 773 Gs
77.3 mT
 0.34 kg / 0.75 lbs
340.1 g / 3.3 N
 low risk
30 mm 356 Gs
35.6 mT
 0.07 kg / 0.16 lbs
72.1 g / 0.7 N
 low risk
50 mm 115 Gs
11.5 mT
 0.01 kg / 0.02 lbs
7.5 g / 0.1 N
 low risk
Pulling power decreases sharply with every mm of gap. Note that even a very thin break (e.g., contamination, varnish, dust) strongly reduces the pull force. Neodymiums work most effectively in perfect adhesion; air break drastically cuts the force. Notice how quickly the load capacity plummet, when the magnet does not adhere flatly to the metal substrate. When designing the assembly, eliminate unnecessary gaps.

Table 2: Sliding hold (wall)
MP 25x8x20 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 3.80 kg / 8.39 lbs
3804.0 g / 37.3 N
1 mm Stal (~0.2) 3.21 kg / 7.09 lbs
3214.0 g / 31.5 N
2 mm Stal (~0.2) 2.68 kg / 5.90 lbs
2676.0 g / 26.3 N
3 mm Stal (~0.2) 2.20 kg / 4.86 lbs
2204.0 g / 21.6 N
5 mm Stal (~0.2) 1.46 kg / 3.21 lbs
1458.0 g / 14.3 N
10 mm Stal (~0.2) 0.49 kg / 1.08 lbs
490.0 g / 4.8 N
15 mm Stal (~0.2) 0.17 kg / 0.38 lbs
172.0 g / 1.7 N
20 mm Stal (~0.2) 0.07 kg / 0.15 lbs
68.0 g / 0.7 N
30 mm Stal (~0.2) 0.01 kg / 0.03 lbs
14.0 g / 0.1 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
The following data shows the theoretical shear load required to cause the slippage of the magnet downwards on a vertical metal surface (assuming typical friction). This parameter is a function of the distance between the magnet and the metal.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MP 25x8x20 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
5.71 kg / 12.58 lbs
5706.0 g / 56.0 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
3.80 kg / 8.39 lbs
3804.0 g / 37.3 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
1.90 kg / 4.19 lbs
1902.0 g / 18.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
9.51 kg / 20.97 lbs
9510.0 g / 93.3 N
When placing a element on a vertical plane (e.g., a fridge), it you can count on just approx. 20%-30% of its maximum pull force. Gravitational force and a weak degree of grip influence the fact that magnets slide down easier than they detach. Planning a wall mount? Remember that the sliding force is much weaker than the perpendicular breakaway force. On a smooth steel, the element will slip down under a much lighter load. Utilizing a rubberized coating can drastically raise the stability.

Table 4: Steel thickness (saturation) - sheet metal selection
MP 25x8x20 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
5%
 0.95 kg / 2.10 lbs
951.0 g / 9.3 N
1 mm
13%
 2.38 kg / 5.24 lbs
2377.5 g / 23.3 N
2 mm
25%
 4.76 kg / 10.48 lbs
4755.0 g / 46.6 N
3 mm
38%
 7.13 kg / 15.72 lbs
7132.5 g / 70.0 N
5 mm
63%
 11.89 kg / 26.21 lbs
11887.5 g / 116.6 N
10 mm
100%
 19.02 kg / 41.93 lbs
19020.0 g / 186.6 N
11 mm
100%
 19.02 kg / 41.93 lbs
19020.0 g / 186.6 N
12 mm
100%
 19.02 kg / 41.93 lbs
19020.0 g / 186.6 N
A thin sheet is incapable of focus the full magnetic flux, which weakens actual performance of the holder. Should you install a neodymium to a thin surface, the field will penetrate right through and the pull force will drop sharply. To squeeze full efficiency of this neodymium's potential, you require a sufficiently solid piece of steel. The material oversaturation causes that on delicate walls (e.g., appliance housings), the holder holds weaker. We suggest choosing the steel cross-section from these parameters.

Table 5: Working in heat (stability) - power drop
MP 25x8x20 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 19.02 kg / 41.93 lbs
19020.0 g / 186.6 N
 OK
40 °C -2.2% 18.60 kg / 41.01 lbs
18601.6 g / 182.5 N
 OK
60 °C -4.4% 18.18 kg / 40.09 lbs
18183.1 g / 178.4 N
 OK
80 °C -6.6% 17.76 kg / 39.16 lbs
17764.7 g / 174.3 N
100 °C -28.8% 13.54 kg / 29.86 lbs
13542.2 g / 132.8 N
Classic neodymiums change their properties power after exceeding the maximum temperature. Protect against heat – excessive heat can permanently destroy this magnet. As the temperature rises, the magnet's capacity momentarily lowers. Refrain from using this magnet close to ovens higher than its safe range. Too high temperature will cause irreversible degradation of magnetic properties.
*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Thin magnets (pancake types) risk losing magnetic properties sooner than taller cylinders. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (attraction) - field range
MP 25x8x20 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 30.91 kg / 68.14 lbs
6 082 Gs
4.64 kg / 10.22 lbs
4636 g / 45.5 N
 N/A
1 mm 28.48 kg / 62.79 lbs
11 091 Gs
4.27 kg / 9.42 lbs
4272 g / 41.9 N
 25.63 kg / 56.51 lbs
~0 Gs
2 mm 26.11 kg / 57.57 lbs
10 620 Gs
3.92 kg / 8.63 lbs
3917 g / 38.4 N
 23.50 kg / 51.81 lbs
~0 Gs
3 mm 23.86 kg / 52.61 lbs
10 153 Gs
3.58 kg / 7.89 lbs
3580 g / 35.1 N
 21.48 kg / 47.35 lbs
~0 Gs
5 mm 19.76 kg / 43.56 lbs
9 238 Gs
2.96 kg / 6.53 lbs
2964 g / 29.1 N
 17.78 kg / 39.20 lbs
~0 Gs
10 mm 11.84 kg / 26.11 lbs
7 152 Gs
1.78 kg / 3.92 lbs
1776 g / 17.4 N
 10.66 kg / 23.50 lbs
~0 Gs
20 mm 3.98 kg / 8.77 lbs
4 145 Gs
0.60 kg / 1.32 lbs
597 g / 5.9 N
 3.58 kg / 7.89 lbs
~0 Gs
50 mm 0.24 kg / 0.54 lbs
1 024 Gs
0.04 kg / 0.08 lbs
36 g / 0.4 N
 0.22 kg / 0.48 lbs
~0 Gs
60 mm 0.12 kg / 0.26 lbs
712 Gs
0.02 kg / 0.04 lbs
18 g / 0.2 N
 0.11 kg / 0.23 lbs
~0 Gs
70 mm 0.06 kg / 0.13 lbs
514 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
 0.06 kg / 0.12 lbs
~0 Gs
80 mm 0.03 kg / 0.07 lbs
383 Gs
0.01 kg / 0.01 lbs
5 g / 0.1 N
 0.03 kg / 0.07 lbs
~0 Gs
90 mm 0.02 kg / 0.04 lbs
293 Gs
0.00 kg / 0.01 lbs
3 g / 0.0 N
 0.02 kg / 0.04 lbs
~0 Gs
100 mm 0.01 kg / 0.03 lbs
230 Gs
0.00 kg / 0.00 lbs
2 g / 0.0 N
 0.01 kg / 0.02 lbs
~0 Gs
Two magnets interact from a much further distance than a neodymium and metal setup. Such a system of magnet-to-magnet creates a more powerful interaction and a wider radius of performance. Planning to create a strong closure? Use a pair of magnets instead of a neodymium and a steel. Exercise caution that when connecting a pair of magnets, the collision energy is huge. The repulsion force is slightly lower than the connection force, but still impressive.
*Flux density between like poles drops to ~0 Gs at the geometric center between the magnets (resulting from vector opposition).
Attention: Results apply to shear force of two matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MP 25x8x20 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 17.0 cm
Hearing aid 10 Gs (1.0 mT) 13.5 cm
Timepiece 20 Gs (2.0 mT) 10.5 cm
Mobile device 40 Gs (4.0 mT) 8.0 cm
Remote 50 Gs (5.0 mT) 7.5 cm
Payment card 400 Gs (40.0 mT) 3.0 cm
HDD hard drive 600 Gs (60.0 mT) 2.5 cm
A strong magnetic field poses a real danger to electronics as well as medical implants. These NdFeB products generate a flux that destroys function of sensitive medical devices. Be aware: the invisible magnetic field penetrates the body and housings. Exceptional care must be exercised by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, speakers, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MP 25x8x20 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 18.05 km/h
(5.01 m/s)
 0.83 J
30 mm 19.29 km/h
(5.36 m/s)
 0.95 J
50 mm 19.34 km/h
(5.37 m/s)
 0.95 J
100 mm 19.35 km/h
(5.38 m/s)
 0.95 J
Neodymium magnets are delicate – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely turns into a projectile. Impact energy can destroy the magnet or painful pinches to fingers. Be sure to control the product during bringing near metal so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when working with large magnets.

Table 9: Anti-corrosion coating durability
MP 25x8x20 / N38

Technical parameter Value / Description
Coating type [NiCuNi] Nickel
Layer structure Nickel - Copper - Nickel
Layer thickness 10-20 µm
Salt spray test (SST) ? 24 h
Recommended environment Indoors only (dry)
The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Electrical data (Flux)
MP 25x8x20 / N38

Parameter Value SI Unit / Description
Magnetic Flux 10 108 Mx 101.1 µWb
Pc Coefficient 1.25 High (Stable)
Flux value emitted by the magnet pole. Key data in coil applications and motors. Pc value defines the working geometry.

Table 11: Physics of underwater searching
MP 25x8x20 / N38

Environment Effective steel pull Effect
Air (land) 19.02 kg Standard
Water (riverbed) 21.78 kg
(+2.76 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Shear force

*Note: On a vertical surface, the magnet holds just a fraction of its nominal pull.

2. Steel saturation

*Thin metal sheet (e.g. computer case) significantly reduces the holding force.

3. Temperature resistance

*For standard magnets, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 1.25

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The Pc (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher Pc value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Material specification

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Ecology and recycling (GPSR)

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 030450-2026
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The ring magnet with a hole MP 25x8x20 / N38 is created for mechanical fastening, where glue might fail or be insufficient. Thanks to the hole (often for a screw), this model enables quick installation to wood, wall, plastic, or metal. It is also often used in advertising for fixing signs and in workshops for organizing tools.
This material behaves more like porcelain than steel, so it doesn't forgive mistakes during mounting. One turn too many can destroy the magnet, so do it slowly. It's a good idea to use a rubber spacer under the screw head, which will cushion the stresses. Remember: cracking during assembly results from material properties, not a product defect.
Moisture can penetrate micro-cracks in the coating and cause oxidation of the magnet. In the place of the mounting hole, the coating is thinner and can be damaged when tightening the screw, which will become a corrosion focus. This product is dedicated for inside building use. For outdoor applications, we recommend choosing rubberized holders or additional protection with varnish.
The inner hole diameter determines the maximum size of the mounting element. For magnets with a straight hole, a conical head can act like a wedge and burst the magnet. Aesthetic mounting requires selecting the appropriate head size.
This model is characterized by dimensions Ø25x20 mm and a weight of 66.09 g. The pulling force of this model is an impressive 19.02 kg, which translates to 186.54 N in newtons. The mounting hole diameter is precisely 8 mm.
The poles are located on the planes with holes, not on the sides of the ring. If you want two such magnets screwed with cones facing each other (faces) to attract, you must connect them with opposite poles (N to S). When ordering a larger quantity, magnets are usually packed in stacks, where they are already naturally paired.

Pros as well as cons of Nd2Fe14B magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
  • They retain attractive force for almost ten years – the drop is just ~1% (in theory),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by external magnetic fields,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnetic induction on the top side of the magnet is impressive,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of exact modeling and adapting to atypical conditions,
  • Versatile presence in innovative solutions – they are used in magnetic memories, motor assemblies, precision medical tools, also complex engineering applications.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of making threads in the magnet and complicated shapes - preferred is casing - mounting mechanism.
  • Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Information about lifting capacity was determined for the most favorable conditions, taking into account:
  • on a plate made of structural steel, perfectly concentrating the magnetic flux
  • possessing a thickness of min. 10 mm to avoid saturation
  • with an ideally smooth contact surface
  • with direct contact (without impurities)
  • under perpendicular force vector (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Please note that the magnet holding may be lower depending on elements below, in order of importance:
  • Air gap (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
  • Angle of force application – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin plate does not accept the full field, causing part of the flux to be wasted into the air.
  • Steel type – mild steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
  • Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Precautions when working with NdFeB magnets
Hand protection

Pinching hazard: The attraction force is so immense that it can result in blood blisters, crushing, and broken bones. Use thick gloves.

Conscious usage

Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can react.

Data carriers

Data protection: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Risk of cracking

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.

Danger to pacemakers

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Demagnetization risk

Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.

Warning for allergy sufferers

Medical facts indicate that nickel (standard magnet coating) is a common allergen. For allergy sufferers, refrain from touching magnets with bare hands and choose encased magnets.

Impact on smartphones

Note: neodymium magnets generate a field that interferes with sensitive sensors. Maintain a separation from your mobile, tablet, and navigation systems.

Do not give to children

NdFeB magnets are not toys. Swallowing multiple magnets may result in them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Do not drill into magnets

Drilling and cutting of neodymium magnets carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Attention! Want to know more? Check our post: Why are neodymium magnets dangerous?