Gravity Filtration

There are a variety of filter media options out in the marketplace. Spunbond Polypropylene is an excellent alternative to Chemical Bonded Rayon. It is similar in performance to Rayon but has a much lower coolant retention level and thus will not deplete your coolant so rapidly. Wet strength is higher and so tearing is less likely. A wide variety of “weights” are available for differing applications.

Gravity Filtration Media

Lighter grades of Spunbond Polyester are becoming popular, sharing many of the properties of polypropylene. However, weight for weight, polyester is stronger and is less likely to be affected by the oil components of coolants. As with Polypropylene, a wide variety of “weights” are available for differing applications.

A note about “Effective Filtration” levels – please be aware that this parameter can be affected by many factors outside our control. For instance, the ability of a given media to stop particles of a specific size can be affected by flow rate (a faster flow will permit larger particles to pass), coolant formulation, water quality, temperature, particle type (rigid, friable, deformable) and shape, particle size distribution and more.

For these reasons, the “effective filtration” levels quoted cannot be guaranteed and should be seen as for guidance and as a means of comparison only.