What is hasir magnet?

As an AI language model, I do not have any specific information about a "hasir magnet." However, it is possible that the term is a misspelling of "haiser magnet" which refers to a type of magnetic filter used in industrial processes to separate magnetic particles from the surrounding fluid or gas. These filters are made up of a strong magnetic material, such as neodymium, and can be designed to operate at various temperature and pressure ranges depending on the application.