Non-Woven Liquid Filter Bag
Nylon needle-felt depth filter bags, 1–1200 μm, for industrial liquid filtration.
Product Introduction
Our non-woven liquid filter bags combine nylon needle-felt depth filtration media with fully welded or heavy-duty sewn construction for efficient industrial liquid filtration. The fiber-interlocked structure captures solid particles, fibers and impurities through both surface and depth mechanisms, while the glazed surface prevents fiber migration into the filtrate.
Available in industry-standard sizes #1 through #4 to fit single and multi-bag filter housings, with a choice of plastic flange, steel ring or drawstring collars. Nylon, polyester and polypropylene media cover a wide range of chemical and temperature conditions — tell us your liquid, and we will match the right grade.
Key Features
- Nylon, polyester and polypropylene media available
- Micron ratings from 1 μm to 1200 μm
- Standard sizes #1–#4 fit common filter housings; custom sizes supported
- Fully welded or heavy-duty sewn seams
- Collar options: PP/PE plastic flange, carbon steel, stainless steel ring or drawstring
- Glazed surface treatment — no fiber migration into filtrate
- OEM and custom specifications supported
Specifications
| Material available | Nylon (NMO) / Polyester (PE) / Polypropylene (PP) |
|---|---|
| Micron rating | Nylon: 25–600 μm (up to 2000 μm range); Polyester & PP: 0.5–300 μm |
| Standard sizes | #1: 7"×16" (0.19 m² / 7.9 L); #2: 7"×32" (0.41 m² / 17.3 L); #3: 4"×8.25" (0.05 m² / 1.4 L); #4: 4"×14" (0.09 m² / 2.5 L); custom sizes supported |
| Max. operating temperature | Polyester: 120–130°C; Nylon & PP: 80–100°C (confirm grade for your application) |
| Collar / ring | Polypropylene ring, polyester ring, galvanized steel ring, stainless steel ring, or drawstring |
| Seam construction | Fully welded or heavy-duty sewn |
| Chemical resistance | Excellent resistance to alkalis, solvents, hydrocarbons and oils; not recommended for high-concentration acids |
| Customization | OEM supported; custom sizes and materials available |
Suitable Applications
Chemical ProcessingCorrosion-resistant filtration media for acids, alkalis, solvents and catalysts.
Water TreatmentIntake screens, pre-filtration and wastewater filtration media.
Oil & GasSand control, mud filtration and fuel purification screens.
Industrial ManufacturingScreening, protection and process filtration for general industry.Frequently Asked Questions
Needle-felt bags (this product) provide depth filtration — particles are captured throughout the fiber matrix, giving high dirt-holding capacity for viscous or high-solids liquids. Monofilament woven bags provide surface filtration with precise, fixed apertures — better for accurate micron ratings and reusability. See our nylon monofilament filter bag for the woven option.
Sizes #1 (7"×16") and #2 (7"×32") are the industry standards for most single and multi-bag housings. Check your housing manual for the basket dimensions, or send us the model — we will confirm the match.
Polyester media handles up to 120–130°C. Tell us your liquid and operating temperature in the quote form and we will confirm the right media grade.
Yes — custom sizes, media, collar types and private packaging are all supported. Send your specification for a quotation.
Need Non-Woven Liquid Filter Bag in a Custom Size?
Send your specification or drawing — our engineers will confirm feasibility and quote within 24 hours.