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https://www.strong-magnetics.com/products/waterproof-sewing-magnets/

The thin neodymium magnet surrounding thin steel cups can be used as magnetic button, also known as sew-in (sewing) magnets, the kind of strong waterproof magnets. Usually the outside also sealed a layer of PVC waterproof film. PVC waterproof film can protect the magnet from corrosion. The plastic layer also provides something to sew on to keep the magnet in place. If you use it in a leather bag that doesn't get wet, use sew in magnet without PVC. Our PVC sew in magnets can be washable, they are widely used in textile as waterproof magnetic buttons.

Types of Waterproof Sewing Magnets
Neodymium Sewing Magnets 12x2mm
Rare earth neodymium washable magnetic button Ø12x2mm
Invisible neodymium sew-in magnets 12x2mm PVC coated

Neodymium Sewing Magnets 14x2.5mm
14x2.5mm PVC coated waterproof neodymium sewing magnets
Ø14mm invisible PVC coated neodymium magnetic buttons

Neodymium Sewing Magnets 18x2.5mm
Neodymium Waterproof Sew-In Magnets 18x2.5mm
Ø18mm washable hidden neodymium magnetic buttons

Neodymium Sewing Magnets 25x3.3mm
Waterproof Neodymium Sewing(Sew-in) Magnets Ø25x3.3mm
Ø25m Invisible Neodymium Waterproof Magnetic Button

Sewing PVC magnets with a sewing machine
For the application of magnetic buttons, the pvc magnet needs to be paired sewn into textile, make sure the PVC sewing magnets + and - are attached to each other.

Remove the two opposite PVC sew-in magnets from the strip.

Sew one of the sew-in magnets onto the fabric. The other magnet is temporarily placed away from the metal object.

Now sew on another pvc magnet with the opposite pole. Make sure the magnets don't repel each other.

Many parts of the machine are magnetic, so it is not easy to sew strong sew-in magnets onto fabric with a sewing machine. If available, we recommend sewing magnets to the fabric by hand.

Beilun Meank is a leading permanent magnet supplier, which specializes in the processing and sales of neodymium rare earth magnets and pot magnets. We can supply circular neodymium magnets with diameters ranging from 0.5-230mm and rectangular neodymium magnets with diagonal lines of 250mm.

If you want to know more different permanent magnet types, please visit our website.