The fill-material is the most important part of a technical brush, as it performes out the brushing action. According to this, the selection for the type of wire has to be properly conceived and analyzed.
The fill-material can be provided as hard or soft type of wire, either thick or thin filament, highly resistant to chemical agents or to high temperatures, quite flexible, particularly bending, deforming and abrading-proof too.
For special purposes, it is possible to combine and mix different type of wires, in accordance to predefinite mixing combinations. The wires working strength is determined by both length of the surface of contact and its density: this concept finds its application especially in the wheel brushes assembly.
It is strictly advised to remind that both exploiting temperature and chemical agents concentration may be very important during the brushing session, as the end user may exploit the brush through various rating performances.
Before any usage, it is also advised to test the brush in the same working conditions.