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SB5
Double-fin brush seal strip with black bristles on white studio background
Brushes & SealsFenestrationMotorized Retractable ScreensAccess SystemsCustomizable

Brush with Fin Seal

Combination brush and fin seal for enhanced air and light blocking. The rigid center fin provides a true weather seal while the surrounding pile filaments fill gaps and reduce vibration.

Also known as

fin seal · pile seal with fin · double fin weatherstrip · center fin brush

See cross-industry vocabulary

Brush seal family

Used in Fenestration, Motorized Retractable Screens, Access Systems, Data Centers, HVAC, Conveyor, Elevator, Fire Protection

Brush SealPile WeatherstripPile Weather StripPile SealFin Pile SealBrush GrommetCable Pass-Through BrushBrush PanelSkirting SealSkirting BrushSkirtboard SealConveyor Brush StripDust Seal BrushBrush WeatherstripBrush Weather StripBrush StripPerimeter Brush SealBrush WeathersealDamper Blade SealAir Seal StripCold Smoke SealElevator Door BrushSkirt DeflectorT-Slot Brush
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Available Configurations

Size: 1" (25.4mm)

Selected configuration: Size: 1" (25.4mm)

Need a different size? We manufacture custom configurations — request a quote with your exact specifications.

Key Features

  • Center fin for true weather barrier
  • Pile filaments for gap filling
  • Available in multiple fin materials
  • Standard and heavy-duty options

Available Materials

PolypropylenePolyethylene
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Specifications

Size Range1/2" (12.7mm) – 2" (50.8mm)
Pile MaterialPolypropylene
Fin MaterialPolyethylene

Component family

Browse the Brush Seals family →

Brush seals in T-slot, fin-back, membrane-backed, and large-format profiles. Nylon and polypropylene filament, sized for screens, dock seals, industrial enclosures, and overhead doors.

Spec-equivalent for

Brush with Fin Seal cross-references

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Heavy-duty brush seal with integrated rubber membrane backing for maximum sealing performance. Used in overhead door bottoms, loading dock seals, and industrial enclosure perimeters.

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Technical Resources

Specifying Brush with Fin Seal

Comparison

EPDM vs Silicone Rubber Seals: A Material Selection Guide

EPDM handles outdoor temperature swings and ozone exposure well; silicone handles extreme heat. Here's the full decision framework.

8 min read

Comparison

Brush Seal vs Pile Weatherstrip: Which Sealing Solution Fits?

Fenestration calls it pile weatherstrip. Data centers call it a brush grommet. Conveyors call it a skirting seal. Here's what they actually are and how to specify them.

6 min read

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