Brush Elements: Width 5-20 mm, Free height 10-25 mm

Component Specifications

Definition

A precision-engineered brush seal component designed specifically for tail skin sealing in automotive assembly lines. This component consists of densely packed synthetic or natural bristles arranged in a specific pattern within a durable housing, creating a flexible yet effective barrier against contaminants, moisture, and air infiltration at the interface between vehicle body panels and trim components.

Working Principle

The brush elements create a labyrinth seal through densely packed bristles that conform to surface irregularities while maintaining consistent contact pressure. As the vehicle components move relative to each other (during assembly or operation), the flexible bristles maintain sealing integrity by adapting to dimensional variations and surface imperfections through elastic deformation and controlled compression.

Materials

Bristles: Polyamide (PA6, PA66) or polypropylene filaments with diameter 0.1-0.3mm; Housing: Aluminum alloy (6061-T6) or stainless steel (304/316); Backing plate: Galvanized steel or engineering plastics; Adhesive: Polyurethane-based structural adhesive

Technical Parameters

Parameter	Typical range	Notes & selection driver
Width	5-20 mm
Length	Customizable up to 2000 mm
Free Height	10-25 mm
Bristle Density	15,000-25,000 filaments per linear inch
Dust Protection	IP6K equivalent
Compression Force	2-5 N/cm at 50% compression
Compression Range	30-70% of free height
Operating Temperature	-40°C to +120°C
Water Ingress Protection	IP65 equivalent

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO/TS 16949, DIN 75201, SAE J400

Parent Products

This component is used in the following industrial products

Tail Skin Seal

A critical sealing component located at the rear of a shield tunneling machine's shield shell that prevents groundwater and soil from entering the tunnel during excavation.

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Engineering Analysis

Risks & Mitigation

Bristle shedding during assembly
Inconsistent compression due to manufacturing variations
Chemical degradation from automotive fluids
UV degradation of synthetic bristles
Inadequate sealing due to improper installation

FMEA Triads

Trigger: Incorrect bristle material selection
Failure: Premature wear or chemical degradation
Mitigation: Validate material compatibility with automotive fluids and environmental conditions through accelerated testing

Trigger: Improper compression during installation
Failure: Inadequate sealing performance
Mitigation: Implement torque-controlled installation procedures and training for assembly personnel

Trigger: Contamination during manufacturing
Failure: Reduced sealing effectiveness and potential vehicle quality issues
Mitigation: Establish cleanroom assembly areas and implement quality control checkpoints

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.2 mm dimensional tolerance, ±10% compression force tolerance

Test Method

IP ingress protection testing per IEC 60529, compression set testing per ASTM D395, abrasion resistance testing per DIN 53516, chemical resistance testing per ISO 1817

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Brush Elements

Manufacturer profiles associated with Brush Elements.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of brush elements in tail skin sealing?

Brush elements in tail skin sealing primarily prevent water, dust, and noise infiltration at the interface between vehicle body panels and trim components while allowing for thermal expansion and manufacturing tolerances.

How do brush elements differ from traditional rubber seals?

Brush elements offer superior conformability to irregular surfaces, lower friction during assembly, better drainage characteristics, and reduced compression set compared to solid rubber seals, while maintaining effective sealing performance.

What maintenance is required for brush seal components?

Brush seals typically require minimal maintenance. Periodic visual inspection for bristle damage or contamination accumulation is recommended, with cleaning using compressed air or mild solvents if necessary.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Brush Elements