Material
Hollow Nylon Filament
Hollow Nylon Filament is selected from its stiffness, recovery, wear, wet-service, chemical, and temperature behavior. The same material can produce different stiffness, so filament diameter, trim length, density, grade, and service conditions must also be defined.
Material Overview
Hollow Nylon Filament is a special-profile polyamide filament used as brush fill or a cleaning-contact element.
In a finished brush, Hollow Nylon Filament does not create a fixed stiffness by itself. Working stiffness and recovery depend on filament size, free trim, density, tuft pattern, and contact. Grade and operating conditions determine how stable that behavior remains.
Material Properties
| Outside diameter | 0.20–1.50 mm hollow-profile filament |
|---|---|
| Temperature range | -20–100°C |
| Stiffness | Soft to medium with reduced mass and flexible contact |
Brush Applications
For Hollow Nylon Filament, directly related brush structures include Handheld Detail Brushes, Tube & Pipe Bore Brushes, Roller and Conveyor Brushes, and Polishing Buffing Wheels. Applications related to Hollow Nylon Filament include Industrial Machine Cleaning, Dust Removal, Brick, Tile & Building Material Machine Brush Use, and Laboratory Tube Cleaning.
Specification and Customization
Material form
Hollow-Profile Filament
Common forms
Hollow-profile filament 0.20–1.50 mm outside diameter
Grade
Hollow PA filament; polymer grade and profile specified separately
Reference standard
ISO 527-1:2019; ASTM D638; ISO 62:2008; ASTM D570-22; ISO 868:2003; ASTM D2240-15(2021); ISO 4892-3:2024; ASTM G154-23; UL 94; ISO 13061-1; ASTM D143
Limitations and Alternatives
Lower cutting force than solid filament; hollow sections can retain residue if not washed and dried
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