PTFE Filament

PTFE, polytetrafluoroethylene, is the fluoropolymer best known as a non-stick coating. As filament it is dense, 2.14–2.20 g/cm³, melts at 327°C and takes up less than 0.01% water. It is drawn from about 0.15 mm to 1.5 mm. Its surface is slippery, so it wipes and releases residue rather than scraping.

In our range: 25 mm PTFE chemical tube brushes, 120 mm PTFE solvent vessel brushes, PTFE brushes, inkjet nozzle cleaning brushes, disposable endoscope channel brushes and volumetric flask brushes, plus acid tank brushes that pair PTFE or PVDF with chemical-resistant bodies.

PTFE resists acids, alkalis, oils, fuels and cleaning solvents, including many that attack nylon, PP and polyester. The cited PTFE grade is rated for continuous service up to 260°C. That rating applies to the filament; the brush body, handle, core and any binder must be rated for the same service, or they fail first.

It is soft and slippery, so it is not a scrubbing or cutting fill, and it has less bend recovery than nylon. It also costs much more than common fills. Use it where the chemistry or temperature rules out everything else; for strong acids at room temperature, PP or PVDF are often enough.

The chemical, its concentration and temperature, how long the brush is in contact, the vessel or bore size, and the body and handle materials you need. We match the whole brush to the chemistry, not just the fill.