MaterialSynthetic Filaments
PVDF Filament
Fluoropolymer filament
PVDF is a fluoropolymer filament with strong resistance to acids and many chemicals, stable stiffness when wet and a working range well above PP. It is used for acid tanks, chemical process equipment and pipe cleaning. It costs more than PP and recovers less than nylon, so it is chosen for the chemistry, not for scrubbing power.
What is PVDF filament?
PVDF, polyvinylidene fluoride, is a fluoropolymer, related to PTFE but tougher and easier to process. As brush fill it is drawn from about 0.10 mm to 1.5 mm, round or crimped. Its stiffness is medium, and it stays the same wet or dry.
How hot, and which chemicals?
For brush service, about -40 to 140°C continuous, depending on the grade; the conductive PVDF grade cited in our data lists 150°C. PVDF resists most acids, including many at concentrations and temperatures that would attack nylon, and many salts and solvents. Its resistance profile is grade-specific, so the exact grade is matched to the chemicals.
Where is PVDF used?
In our range: the 200 mm PVDF acid tank brush and PTFE chemical tube brushes with PVDF parts, for acid and alkali washdown, tank and pipe cleaning in chemical process equipment.
Where does PVDF fall short?
It costs more than PP and has lower bend recovery than nylon, so it can take a set at tight, repeated bends. Use larger radii at repeated flex points, and choose PP where the chemistry allows it.
What should you tell us when you ask for a PVDF brush?
The chemicals, concentrations and temperatures, how long the brush is in contact, the tank or pipe size, and the body and handle materials needed, so the whole brush is matched to the chemistry.
Questions buyers ask about PVDF Filament
When is PVDF better than PP for an acid brush?
When the acid is stronger or hotter than PP can take, or the chemical attacks polyolefins. PVDF works to about 140°C by grade and resists many acids that PP does not. For dilute acids at room temperature, PP is cheaper and enough.
What temperature can a PVDF brush take?
About -40 to 140°C continuous for brush service, depending on the grade. Confirm the exact grade and the chemical at that temperature.
Do PVDF bristles stay springy?
Less than nylon. PVDF can take a set at tight, repeated bends, so the brush is designed with larger radii at flex points. It is chosen for chemistry, not for scrubbing power.
Where these figures come from
| Property | Published value | Source |
|---|---|---|
| Published specification |
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Ensinger Retrieved 2026-07-22 |
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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.”
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