The Complete Guide to Elevator & Escalator Strip Brushes: Choosing Between PP, Nylon, and Fire-Retardant Filaments for Safety & Performance
Introduction: The Unsung Hero of Passenger Safety and Cleanliness
For facility managers, elevator OEMs, and maintenance technicians, ensuring smooth and safe vertical transportation is paramount. A critical yet often overlooked component in this system is the humble strip brush. Searches like "escalator skirt brush replacement," "elevator door brush material," or "fire-resistant escalator brush" reveal a common need: finding durable, code-compliant brushes that solve specific problems.
These brushes are not just for dusting; they are engineered safety and maintenance tools. From preventing debris entry in elevator shafts to creating a safe barrier on escalator skirts, the correct strip brush material directly impacts passenger safety, equipment longevity, and compliance with regulations like EN 115 for escalators.
At Shanghai Longguang, we specialize in manufacturing high-performance strip brushes tailored for the transportation industry. This guide will help you navigate the material selection to ensure optimal performance.

Part 1: Key Applications of Strip Brushes in Elevators and Escalators
Understanding where and why these brushes are used clarifies the material requirements:
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Escalator Skirt Brushes: Mounted on the sides of steps or on stationary skirts, their primary function is safety. They create a tactile warning and physical barrier, preventing shoes, clothing, or small items from getting trapped in the dangerous gap between the moving step and the stationary skirt panel.
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Elevator Door Brushes/Seals: Installed on the leading edge of car doors or sill plates, these brushes seal the gap as doors close. They prevent dust, debris, and small objects from falling into the door track and shaft, reducing maintenance and keeping the cab clean. They also dampen noise.
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Escalator Step-Cleaning Brushes: Often mounted beneath the escalator comb plate, these brushes automatically clean debris (dirt, gum, gravel) from the step treads as they cycle, maintaining appearance and preventing damage.
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General Cleaning & Barrier Brushes: Used in machine rooms or at the base of elevators to deter pests or mark boundaries.
Part 2: Decoding Filament Materials: PP, Nylon, and Specialized Grades
The environment and purpose dictate the best filament material. Here’s a breakdown of the most common types, aligned with the questions searchers have.
1. Polypropylene (PP) Filaments
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Properties: Economical, excellent moisture and chemical resistance, good abrasion resistance, low moisture absorption.
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Best For: Escalator step-cleaning brushes and elevator door seals in standard commercial settings where high temperatures are not a concern. It's a robust, all-round choice for general debris management.
2. Standard Nylon (PA) Filaments
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Properties: Superior abrasion resistance and durability compared to PP, good flexibility, and better performance in dry environments.
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Best For: High-traffic escalator skirt applications where constant passenger contact demands maximum wear life. Also excellent for heavy-duty cleaning brushes.
3. Heat-Stabilized / High-Temperature Nylon Filaments
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Properties: Standard nylon formulations enhanced to withstand continuous exposure to higher temperatures without becoming brittle or losing shape.
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Best For: Escalators or elevators installed in sun-drenched atriums, subway stations, or near heat sources. Prevents premature failure in demanding thermal environments.
4. Fire-Retardant / Flame-Retardant (FR) Nylon Filaments
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Properties: Specially compounded nylon that meets stringent fire safety standards. It is designed to self-extinguish and not propagate flame.
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Best For: Mandatory in most modern escalator skirt applications to comply with international safety codes (e.g., EN 115, NFPA). Essential for any brush used in enclosed elevator cabs or shafts where fire safety is a critical concern.

Part 3: Selection Guide: Matching Material to Application and Regulation
| Application | Primary Requirement | Recommended Filament Material | Key Reason |
|---|---|---|---|
| Escalator Skirt Barrier | Safety & Fire Compliance, High Wear | Fire-Retardant (FR) Nylon | Meets building/fire codes (EN 115), offers best durability against constant scraping. |
| Escalator Step Cleaning | Debris Removal, Cost-Effectiveness | Polypropylene (PP) or Standard Nylon | Excellent wear for cleaning, with PP being a more budget-conscious option. |
| Elevator Door Seal | Dust Sealing, Quiet Operation, Durability | Standard Nylon or PP | Provides a good balance of sealing effectiveness, wear resistance, and quiet flexibility. |
| High-Temp Location | Heat Resistance (e.g., glass atrium) | Heat-Stabilized Nylon | Prevents melting, warping, or brittleness in sustained high-heat environments. |
Part 4: Beyond Material: Key Specifications for Optimal Performance
When ordering strip brushes, consider these specs for a perfect fit:
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Filament Density & Trim: A denser fill provides a more effective barrier and seal. Trim length (filament height) must be specified to ensure proper interference with the moving part.
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Backing Type: Aluminum or stainless steel backing is standard for rigidity and corrosion resistance. The mounting method (screw channel, adhesive back) must be specified.
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Color: Custom colors (like black, gray, or metallics) are available for aesthetic blending with the escalator or elevator interior design.
Part 5: The Longguang Advantage: Precision for Passenger Safety
We understand that a strip brush is a critical safety component. Our manufacturing process ensures:
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Code-Compliant Materials: We supply certified Fire-Retardant Nylon and other specialty materials with supporting documentation for your compliance files.
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Custom Engineering: We don't just sell stock sizes. We fabricate strips to your exact length, width, filament type, and mounting specification for a drop-in replacement or OEM installation.
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Durability Testing: Our materials are selected for their proven performance in high-traffic, public transportation environments.
Conclusion: Specify with Confidence for Safety and Longevity
Choosing the right strip brush material is a technical decision affecting safety compliance, maintenance costs, and passenger perception. Moving from a generic brush to an engineered solution made from the correct filament pays dividends in reduced downtime and risk.
Ready to specify or replace the brushes in your elevator or escalator portfolio?

Contact Shanghai Longguang today. Provide us with your application details, required fire ratings, or samples of your current brush. Our team will recommend the optimal PP, Nylon, or Fire-Retardant strip brush solution engineered for safety, durability, and performance.





