MaterialSynthetic Filaments
PEEK Filament
High-performance polymer filament
PEEK is a high-performance polymer filament that stays firm at temperatures far above nylon or polyester and resists most chemicals. It is chosen for hot process, steam, semiconductor and chemically demanding brushes where ordinary fills lose their strength, and not for general cleaning, where it would only add cost.
What is PEEK filament?
PEEK, polyether ether ketone, is a semicrystalline engineering polymer. As filament it has a density of 1.29–1.32 g/cm³, melts at 343°C and takes up about 0.1% water. It is firm, around Shore D 85–90, and is drawn from about 0.10 mm to 1.2 mm. Its continuous service rating is up to about 250°C.
Where is PEEK used?
In our range: PEEK brushes, a 150 mm PEEK steam cleaning brush, and components in semiconductor wafer equipment, such as the PVA cleaning roller and carbon fiber wafer equipment disc. The common reason is heat, steam or a process chemical that would soften or attack a standard fill, or a clean process where the fill must stay stable.
PEEK or PPS?
Both are high-temperature polymers. PEEK runs hotter, up to about 250°C continuous, and is tougher; PPS is rated to about 200°C for brush service and costs less. For steam and the hottest processes, PEEK; for hot ovens and process rollers within PPS’s range, PPS is usually enough.
Where does PEEK fall short?
Cost. PEEK is one of the most expensive brush fills, and it is not needed where PP, nylon or PBT already meet the temperature and chemistry. It is also stiff, so fine, soft PEEK brushes are limited by what filament sizes are available.
What should you tell us when you ask for a PEEK brush?
The temperature, steady and peak, whether steam or chemicals are involved, the surface and the stiffness you need, and the core, block and handle materials, which must be rated for the same heat as the fill.
Questions buyers ask about PEEK Filament
How hot can a PEEK brush work?
PEEK filament is rated for continuous service up to about 250°C and melts at 343°C. The rest of the brush, core, block and handle, must be rated for the same heat.
Should I choose PEEK or PPS for a hot brush?
PPS for work up to about 200°C, where it costs less. PEEK for steam and hotter processes, up to about 250°C continuous, and where extra toughness is needed.
Is PEEK worth the cost for a cleaning brush?
Only when heat, steam or chemicals rule out cheaper fills. For general cleaning, nylon, PBT or PP do the job at a fraction of the cost.
Where these figures come from
| Property | Published value | Source |
|---|---|---|
| Chemical resistance | Excellent resistance to acids, alkalis, oils, fuels and cleaning solvents. | Perlon Retrieved 2026-07-20 |
| Hardness and stiffness | Firm; Shore D about 85-90; high-performance monofilament for heat and chemical exposure. | Perlon Retrieved 2026-07-20 |
| Limitations | Not needed for low-cost general cleaning where PP/Nylon is sufficient. | Perlon Retrieved 2026-07-20 |
| Material definition | PEEK is a high-performance thermoplastic with strong chemical and thermal capability, but published resin limits do not automatically become brush assembly limits. | Perlon Retrieved 2026-07-20 |
Guides that go deeper on this
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A roller brush turns on its own axis and holds an even line of contact across the full width of a belt, sheet, screen or moving product.
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PCB Cleaning
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Semiconductor Wafer & Chip Cleaning
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Industrial Machine Cleaning
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See the cleaning jobCustom Manufacturing RFQ
Discuss This Material
Share what the brush works on, the temperature and chemicals it meets, the form you need — strip, disc, roller or hand brush — the quantity and a drawing or photo.
We reply to every request within 24 hours, with a quotation or with the questions we need answered first. If the brush can be made on our existing tooling, we make the sample directly. If it needs new tooling, we quote a sample fee and a tooling fee, and the sample fee is credited against the bulk order. Need an NDA first? We sign yours before you send drawings, and the files you send are never shown to other customers.
- MOQ500 pcs for small hand-held brushes, 100 pcs for medium and large ones
- SampleTypically 3–7 days
- ProductionFrom 7 days after sample approval, by size and quantity
- Payment30% deposit and 70% before shipment above US$10,000; smaller orders on agreed terms
“We need a brush to remove wet residue from a stainless steel conveyor, about 800mm wide. The current brush wears quickly. We can send photos.”
“We sell drinkware and need a cleaning brush to include with the product. Quantity around 5,000 pieces.”