Polypropylene Strip Brushes
Polypropylene strip brushes are suitable for a range of applications from aggressive scrubbing to light dusting, depending on the brush type, filament size, and trim length selected. Polypropylene filled strip brushes are particularly useful in conditions of high moisture where the maintenance of consistent stiffness is desired. Such applications include water-based part washing, fruit and vegetable washing, and brush seals exposed to wash down or environmental conditions.
For a custom quote on polypropylene strip brushes, start by selecting a channel size from the chart below:
| Strip Brush Diagram | Channel Size |
(A) Base Width ± .010″ |
(B) Leg Height ± .010″ |
Minimum Visible Trim |
Synthetic Fill Size Range |
Send RFQ |
|---|---|---|---|---|---|---|
 |
4 | .190″ | .195″ | 0.5″ | .006″-.014″ |  |
| 5 | .210” | .250” | 0.625” | .006”-.020” | |
|
| 7 | .300” | .315” | 0.75” | .006”-.060” | |
|
| 8 | .335” | .375” | 0.75” | .006”-.120” | |
|
| 10 | .385” | .480” | 1.0” | .006”-.120” | |
|
| 12 | .430” | .565” | 1.0″ | .006”-.120” | |
Other sizes and formats in the range from 0.006″ through 0.108″ are available on special order, subject to minimums and lead-time requirements.
Channel base material options for polypropylene strip brushes include:
- Galvanized Steel – most economical
- Stainless Steel – resists corrosion
- Brass – low electrical resistance
- Aluminum – resists corrosion, lightweight
A polypropylene strip brush also offers good chemical resistance to acids, corrosive akalis, and many solvents, with the exception of trichlorethylene hydrocarbons, benzene, carbon tetrachloride, chlorine, and camphor.
Polypropylene filaments used in strip brushes begin to soften appreciably at 225°F and melt at 330°F, significantly lower than nylon or polyester.
Polypropylene brush fill material is available in stock in the following sizes and formats:
| Filament Diameter | Format | Color |
|---|---|---|
|
.006
|
Crimped
|
Natural
|
|
.008
|
Crimped
|
Natural
|
|
.0120
|
Crimped
|
Natural
|
|
.0140
|
Crimped
|
Natural
|
|
.0180
|
Crimped
|
Black or Natural
|
|
.0204
|
Crimped
|
Black
|
|
.022
|
Crimped
|
Natural
|
|
.036
|
Crimped
|
Black
|
|
.040
|
Level
|
Black
|
| Material Properties | Polypropylene | Polyester | 6-6 Nylon | 6-12 Nylon |
|---|---|---|---|---|
| Stiffness Modulus Dry |
745
|
450
|
512
|
450
|
| Stiffness Modulus Wet |
700
|
447
|
160
|
400
|
| Water Absorption % |
0.03%
|
0.33%
|
9%
|
3%
|
| Bend Recovery % |
75%
|
90%
|
90%
|
90%
|
| Softening Point (°F) |
240°
|
250°
|
250°
|
250°
|
| Melting Point (°F) |
330°
|
482°
|
495°
|
410°
|
Spiral Brush also offers a variety of strip brush holders in sizes to fit whatever size strip you select.
Polypropylene Strip Brush Holders:
 Strip Brush Holder Vertical |
 Strip Brush Holder Horizontal |
 Double Channel Strip Brush Holder |
 Stainless Steel Strip Brush Holder |
 Stainless Steel Channel Clip and Steel Channel Clip |
Learn More About Polypropylene Strip Brushes
Have questions about replacing worn polypropylene strip brushes or have a new need? Interested in receiving a quote, or need help specifying a polypropylene strip brush? Contact Spiral Brushes to learn which options are best suited for your specific application.