100 things about magnet: What does plastic filler do in a POT magnet?

Many products on the market look similar, with the same diameter, the same suction power, and even the same coating.

You may have noticed that some POT magnets have a ring-shaped plastic filler, while others do not.

So what does this plastic filler do?

For the European market, one more raw material means one more material that is compliant with REACH and Rohs certification. So why do some POT magnets add this kind of filler?

Generally, during the assembly process of magnets and steel parts, there will be a little gap. Generally, ferrite magnets are not coated. If there is a layer of plastic filler, it can reduce the contact between the ferrite magnet and the air, and secondly, it can protect the magnet and reduce breakage.

Below is the sample we buy from the market randomly, compared with the sample we choose from our warehouse randomly.

This magnetic hook is very common and very popular in the market, for shop fitting, etc.

We've supplied customers from the EU and the US market for many years.

I look forward to meeting like-minded people and learning and communicating more together. 💕