Resin Bonded filter cartridges

Resin Bonded filter cartridges are manufactured in South Africa to the highest international standards. They are produced using Polyester fibres of controlled diameter which are bonded together by a proprietary process using a phenolic resin.

The process used ensures that the filtration pores between the fibres are more open near the outer surface of the cartridge, and become progressively smaller towards the core of the cartridge. This graded density construction enables the cartridge to trap coarser particles near it’s outer surface, while finer particles are trapped nearer the core.

This provides the exceptionally good particle removal efficiency which is the outstanding feature of the “RRB” cartridge. In addition, the rigid construction also ensures that the cartridge will not deform under high operating pressure differentials.

This means that the Resin Bonded filter cartridges exhibit a consistent and unvarying micron rating throughout it’s life, and does not suffer from the deteriorating filtration efficiency and dirt unloading which occurs on cartridges of softer construction.

The use of grooves greatly increases the cartridge surface area, thereby extending even further, the Resin Bonded filter cartridges already superior service life.


Micron Ratings manufactured



  • Polyester phenolic material
  • Rigid resin-bonded construction
  • Graded density design
  • Grooved outer surface


  • Wide chemical compatibility
  • Can withstand high differential pressures
  • Excellent particle removal efficiency
  • High dirt-holding capacity

Density Construction

Cross section of “RRB” cartridge showing the Graded Density Construction