High-Quality Sintered PTFE Filters from China Suppliers | Custom Sizes Available at Our Factory
Application of Sintered PTFE Filter
| Parameters | Specification Range |
| Diameter (mm) | 20, 25, 30, 35, 40, 45, 50, 60, 1000 (customizable) |
| Length (inch) | 5“, 10”, 20“, 30”, 40” (customizable to 1500mm) |
| Filtration accuracy (μm) | 0.1, 0.3, 0.45, 1, 3, 5, 10, 20, 30, 50, 80, 100 |
| Porosity | 30%-55% |
| Temperature range | -190℃~260℃ (short-term up to 300℃) |
| Pressure Resistant Strength | 0.3-0.8MPa |
| Interface Type | M20, M30, 222, 226, Flush, Platen (Customizable) |
Production Process Sintered PTFE Filter
Pure PTFE powder is used, sieved and premixed.
Fill the powder into the mold and preform it into tube or bar embryo under high temperature (50-80℃) and high pressure.
Advantages Sintered PTFE Filter
Resistant to strong acids (e.g. sulfuric acid, hydrochloric acid), strong bases and organic solvents.
Long-term working temperature up to 200℃, support steam sterilization.
porosity of more than 50%, fluid flux is 30% higher than metal cartridge.
smooth surface like wax, impurities are not easy to adhere to, can be repeatedly cleaned and regenerated.
smooth inner and outer surfaces, no particles falling off to contaminate the fluid.
suitable for ozone sterilization environment (such as pharmaceutical, food industry).
Parameter of Sintered PTFE Filter
| Fields | Specific Applications |
| Pharmaceutical industry | Water filtration for injection, decarbonization of pharmaceutical solution, sterile air filtration. |
| Chemical industry | Aluminum hydroxide, phosphor and other catalyst filtration, acid and alkali solution fine filtration. |
| Food & Beverage | Wine clarification, edible oil filtration, food additive purification. |
| Environmental Protection & Wastewater | Industrial wastewater treatment (e.g., oily wastewater), exhaust particulate interception. |
| Electronics & Semiconductors | Ultrapure water preparation, chemical filtration (e.g. photoresist). |
| Energy & Oil | Electrolyte filtration (lithium batteries), oilfield reinjection water treatment. |
Frequently Asked Questions
What is a Sintered PTFE Filter?
A Sintered PTFE Filter is a porous filtration element made by sintering pure polytetrafluoroethylene (PTFE) powder. This process bonds the particles without melting them, creating a highly durable, chemically resistant, and thermally stable filter structure.
What is the operating temperature range for Sintered PTFE Filters?
Sintered PTFE filters can operate continuously in temperature environments ranging from -190°C to 260°C. They can also withstand short-term temperature peaks of up to 300°C.
Are Sintered PTFE Filters resistant to strong acids and bases?
Yes, PTFE is known for its near-total chemical inertness. Sintered PTFE filters offer outstanding corrosion resistance and can withstand strong acids (like sulfuric and hydrochloric acid), strong bases, and aggressive organic solvents.
Can Sintered PTFE Filters be cleaned and reused?
Yes. Their smooth, wax-like surface prevents impurities from strongly adhering to the filter. They can be repeatedly cleaned, backwashed, or chemically sterilized, allowing for multiple regenerations and a long service life.
Is there any risk of particle shedding with Sintered PTFE Filters?
No. Sintered PTFE filters have highly stable structures with smooth inner and outer surfaces. There is no risk of degranulation or media migration, ensuring that no filter particles contaminate your process fluid.