FILL MATERIALS

Proex
Good filament for sweeping either indoor or out, including damp or humid environments. Not recommended for high temperature applications but a very good all-purpose filament. Proex is a polypropylene and derives its name from the "X" shape of its bristle. Most Proex filament comes in a mixture of tan and black bristles in three diameters.

Nylon
Excellent brush life when used primarily in dry sweeping conditions. Very good on rough surfaces or high-temperature environments because of its durability and higher melting point versus other filaments. Performance is less when conditions are wet or humid.

Poly
Sometimes called "Prolene" or "Prostran", this is a very good filament for most soils and surfaces. It is more economical than Nylon from a cost standpoint but is not recommended for sweeping higher temperature debris like Nylon is.

Union Fiber
Comprised of a mixture of Tampico (tan) and Bassine (dark brown) fibers, this material is excellent for dust control and sweeping fine debris. Because it is a natural fiber, Union has a relatively shorter wear life versus other synthetic materials. Union can come either dyed or un-dyed in which the Bassine fiber is either dark brown (dyed) or rust (un-dyed).

Crimped Wire
In either a single-plane or double-plane crimp, this filament is used in applications needing extra cutting action for heavy duty sweeping of compacted dirt. Recommended for low dust sweeping on unsealed surfaces.

Proex and Wire
One of the most versatile and widely used filament mixtures. The Proex provides good all-purpose sweeping for medium to heavy debris while the wire provides a light cutting action for compacted soils.

Union and Wire
Union and Wire provides better dust control versus Proex and Wire, but has a shorter wear life as described under Union above.

Flat Wire
Used only on side brushes and primarily in outdoor applications. This material is made from flattened spring steel wire and is very aggressive. An excellent material for digging heavy compacted debris away from the edges of buildings and curbs.