String Wound Filter Cartridges

FilterWhale wound filter cartridges feature outer-loose inner-dense gradient honeycomb structure for efficient depth filtration. Multiple materials and customizable sizes available, with high flow rate, large dirt holding capacity and excellent chemical compatibility, ideal for food, pharmaceutical, petrochemical, electronics and industrial oil filtration.
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Products Description

The wound filter cartridge is a precision depth filtration component manufactured by tightly winding continuous fiber yarns on a porous rigid skeleton. By precisely controlling the winding density and pore shape of the filter layer, the product achieves diversified and stable filtration accuracy. It adopts a unique gradient pore structure with looser outer layers and denser inner layers, forming a scientific depth filtration system that intercepts impurities layer by layer.


A variety of filter materials are optional to match different chemical properties of filtering media, ensuring excellent compatibility between the filter cartridge and working fluids. With reliable structural performance, it can effectively remove suspended fine particles and micro impurities in liquids and gases. Suitable for filtration scenarios with low fluid viscosity and low impurity content, FilterWhale wound filter cartridges are widely applied in food and beverage production, organic solvent and electroplating liquid treatment in the electronics industry, petrochemical processing, pharmaceutical manufacturing, as well as purification of hydraulic oil, lubricating oil and other industrial oils.


2. Product Features

  • Gradient Honeycomb Depth Filtration Structure: The outer-loose and inner-dense honeycomb structure realizes layered depth filtration. The graded aperture design stably guarantees standard filtration precision and avoids premature filter blockage.
  • Large Flow Rate & Strong Dirt Holding Capacity: Optimized winding process increases overall porosity, delivering high fluid throughput and excellent pollutant interception performance to extend service life.
  • High Pressure Resistance: Optional spiral welded inner skeleton enhances overall structural strength, enabling the cartridge to operate stably under high pressure differential working conditions.
  • Superior Chemical Compatibility: Multiple optional filter materials adapt to acidic, alkaline, oily and organic media, meeting diverse industrial filtration requirements.
  • Flexible Size Customization: Various configurable lengths and outer diameter specifications support different filtration areas and adapt to multiple working conditions and equipment models.
  • High Filtration Efficiency: Professional gradient filtration structure ensures stable purification performance with a filtration efficiency of up to 90%.
  • Wide Application Range: Universal performance covers food, electronics, chemical, pharmaceutical, water treatment and industrial oil filtration fields.


3. Main Applications & Industry Fields

3.1 Typical Filterable Media

Electroplating solution, industrial chemicals, petrochemical media, developer, printing ink, organic solvents, lubricating oil, edible oil, food and beverage raw materials, pharmaceutical liquid and domestic/industrial water.

3.2 Industry Application Scenarios

  • Water Treatment Industry: Pre-filtration for medium and large-scale ultrapure water systems and production water pre-treatment for beverage factories to reduce suspended impurities in water.
  • Food & Beverage Industry: Filtration of edible oil and vegetable oil; purification of syrup, chocolate slurry and various food liquids; precision filtration of mineral water, wine and carbonated beverages.
  • Electronics Industry: Purification of ultrapure water and organic solvents; filtration of cleaning liquid and electroplating solution for printed circuit board production.
  • Petrochemical & Chemical Industry: Filtration of chemical reagents, coatings, paints, inks and photosensitive solutions; purification of high-viscosity resin, grease, heavy oil and fuel oil.
  • Industrial Oil Filtration: Precision purification of hydraulic oil, lubricating oil and cutting oil to remove particle impurities and protect mechanical equipment.
  • Pharmaceutical Industry: Filtration and purification of pharmaceutical syrup, alcohol, preparation water, VC raw materials, tetracycline and oxytetracycline liquid, and injection preparations.
  • Other Industrial Scenarios: Resin lens cleaning, bearing cleaning, laser cooling water filtration and ultrasonic cleaning fluid purification.


4. Technical Specifications

Specification Item
Detailed Parameters
Filter Media
Bleached Cotton, Food-grade PP, Industrial-grade PP, Nylon, Polyester, Fiberglass, PPS
Skeleton Material
Galvanized Steel, PP, 304 Stainless Steel, 304L Stainless Steel, 316L Stainless Steel
O-ring / Gasket Material
NBR, Silicone Rubber, EPDM, FKM, FEP Encapsulated Rubber
Filtration Precision
0.5μm, 1μm, 5μm, 10μm, 25μm, 50μm, 75μm, 100μm, 150μm, 200μm
Nominal Length
10" (254mm), 20" (508mm), 30" (762mm), 40" (1016mm), 50" (1270mm), 60"
Outer Diameter
61mm, 63mm, 115mm
Inner Diameter
28mm, 30mm
Max Working Pressure
≤0.5MPa
Max Pressure drop
0.2MPa
Max Pressure Differential
≤7bar (72.5psi)


5. Material Types, Advantages & Applications

5.1 Bleached Cotton Wound Filter Cartridge

Advantages: Max operating temperature up to 180℃; food-grade hygienic material; high porosity and large dirt holding capacity, safe for food and pharmaceutical industries.
Applications: Beverages, aromatic solvents, water treatment, film industry, lubricants, edible oil, pharmaceutical production, boiler recycled water, industrial oil, organic solvents, sugar liquid and non-alcoholic beverages.

5.2 Fiberglass Wound Filter Cartridge

Advantages: High temperature resistance up to 400℃, suitable for high-temperature media; strong chemical compatibility for complex filtration environments.
Applications: Heat conduction oil, high-temperature solvents, organic solvents, animal oil, petroleum and vegetable oil filtration.

5.3 Nylon Wound Filter Cartridge

Advantages: Temperature resistance up to 160℃; excellent chemical stability, applicable for various organic solvent filtration.
Applications: Industrial wastewater and organic solvent filtration.

5.4 Fluffy Fiberglass Wound Filter Cartridge

Advantages: Adopts special fluffy forming technology with high porosity, large flow rate and outstanding dirt holding performance.
Applications: Electroplating solution, industrial chemicals, petrochemical media, developer and printing ink filtration.

5.5 Polypropylene (PP) Wound Filter Cartridge

Advantages: Temperature resistance up to 160℃; excellent acid and alkali resistance with stable chemical properties.
Applications: Acid-base media, industrial water, electrophoretic paint, electroplating solution and ultrapure water purification.


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