Selecting The Right Brush
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Several
factors need to be considered to select the right brush for
an application. These factors include:
Application Type: shielding, closing gaps,
static dissipation, etc.
Environment: wet/dry, acid/alkaline/solvents, hot/cold,
direct sunlight
Operation Cycles: heavy or light duty
Physical Properties: soft or aggressive bristles
Special Materials: FDA-approved, etc.
When these factors are properly considered, selecting the right size brush with the best filament and channel material for your application is ensured. Sealeze Sales Representatives have extensive industrial experience and can help you make the right choice.
The following are descriptions of some of the materials and their basic properties as they pertain to strip brush. Familiarization of this material will help you in choosing the right brush for your application and aid in discussing your needs with a Sealeze Sales Representative.
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TABLE
of PROPERTIES
The following definitions will help in understanding the properties
in the table below.
Shape: Level refers to filament or wire that
is straight. Crimped filament or wire is wavy and measured by
amplitude and frequency and produces a denser appearing brush.
Flex Life: Amount of times a filament can be
bent back and forth without damage.
Springiness or Flicking: How fast a filament snaps back
to its original position after being bent.
Bend Recovery: A filament’s ability to
return to its original position after being bent for a short
period of time.
Resistance to Set: A filament’s ability
to return to its original position after being bent for a long
period of time.
Abrasion Resistance: A filament’s ability
to resist wear.
Water Absorption: The ability to retain water.
Measured by percent of fiber weight.
Stiffness in Water: The ability of the filament
to retain its original stiffness with full water absorption.
| Properties | Nylon 6 | Nylon 6.6 | Nylon 6.12 | Polypropylene | Polyester | Synthetic for Elevated Temp |
Horsehair | Tampico (Plant) |
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| Shape | Level or Crimp | Level or Crimp | Level or Crimp | Level or Crimp | Level or Crimp | Level | Level | Level | ||||
| Flex Life | E | E | E | E | G | E | E | F | ||||
| Springiness/Flicking | E | E | E | G | E | E | F | G | ||||
| Bend Recovery | E | E | E | G | E | E | F | P | ||||
| Resistance to set | G | G | G | F | G | G | G | F | ||||
| Abrasion Resistance | E | E | E | F | G | E | F | P | ||||
| Water Absorption | 9% | 9% | 3% | <0.2% | <0.5% | 9% | -- | -- | ||||
| Stiffness in Water | F | F | G | E | E | G | F | P | ||||
| Environment | ||||||||||||
| Working Temperature (degrees F) |
200-230 | 200-230 | 200-230 | 180 | 200-230 | 250-300 | na | na | ||||
| Hot Water | G | G | G | E | E | G | P | E | ||||
| Melting Point (degrees F) | 410 | 500 | 415 | 320 | 430 | 495 | -- | -- | ||||
| Acidic | G | G | G | E | G | G | -- | -- | ||||
| Alkaline | E | E | E | E | G | ? | -- | -- | ||||
| Petroleum Distillates | E | E | E | G | G | E | -- | -- | ||||
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