Triangle Tip
Fin configuration for alignment and stabilization.
Precision-Wound Depth Filtration Cartridges
String Wound Filter Cartridges by Micron Rating, Size, Yarn and End Cap
Incefiltration manufactures string wound filter cartridges by precisely winding polypropylene, absorbent cotton or glass fiber yarn around a porous polypropylene or stainless steel center core. The graded winding structure provides depth filtration, high dirt holding capacity, low pressure drop and dependable particle removal in water, chemicals, inks, food and beverage, biopharmaceutical, electronics and petroleum applications.
Core Product Data
Yarn MaterialsPP polypropylene, absorbent cotton, glass fiber
Micron Ratings1, 3, 5, 10, 20, 30, 50, 70, 100 µm
Lengths10", 20", 30", 40", 50"
Center CoresPP polypropylene or stainless steel
String Wound Filter Cartridge Features
The controlled winding density creates a graded depth-filtration path for staged particle capture.
Deep Filtration Structure
Progressive winding density provides multiple retention layers and effective depth filtration.
High Dirt Holding Capacity
Contaminants are distributed through the cartridge depth instead of loading only the outer surface.
Low Pressure Drop
The open wound construction supports high flow, low initial resistance and longer service life.
Multiple Yarn Materials
PP, absorbent cotton and glass fiber serve different liquid and temperature conditions.
Wide Accuracy Range
Micron ratings from 1 to 100 µm cover fine filtration through coarse pre-filtration.
Custom Core Strength
PP is economical for general service; stainless steel extends strength and operating limits.
String Wound Cartridges by Yarn Material
Select yarn and core materials according to liquid compatibility, temperature, pressure and cleanliness requirements.
PP Polypropylene Yarn
Economical for water, RO pretreatment and many compatible process liquids.
≤60°CGeneral WaterChemical Compatibility
Absorbent Cotton Yarn
Selected for compatible water, oils and process liquids requiring absorbent natural-fiber yarn.
≤120°CGood WettingOil Filtration
Glass Fiber Yarn
High-temperature yarn option for compatible industrial liquids and demanding service.
≤250°CHigh TemperatureSS Core Recommended
Product Structure & Construction
High-grade yarn is wound around a porous center core using controlled winding tension and spacing.
End TreatmentFlat, adapter or custom end configuration
High-Grade YarnPP, absorbent cotton or glass fiber
Porous Center CorePP for standard service or stainless steel for higher strength
Material & Construction Data
Filtration MediaPP polypropylene, absorbent cotton or glass fiber yarn
Center CorePP polypropylene / stainless steel
End CapPP polypropylene or custom adapter configuration
O-Rings / GasketsSilicone rubber, EPDM rubber, NBR rubber, Viton / FKM rubber
Manufacturing ProcessPrecision winding around a porous center core using a controlled pattern
Filtration MechanismGraded depth filtration with progressive particle retention
Typical ApplicationsSeawater RO pretreatment, desalination, ink processing, food and beverage, biopharmaceuticals, microelectronics, chemicals and petroleum
Gradient Pore Structure
Winding density creates staged contaminant capture.
Multiple Precision Options
Different winding patterns deliver 1–100 µm ratings.
CFR 21 Options
Suitable material configurations can be selected where applicable.
String Wound Filter Cartridges by Micron Rating
Choose filtration accuracy according to particle size, contamination loading and downstream protection needs.
Fine Depth Filtration
For fine particle removal, liquid polishing and sensitive downstream protection.
1 µm3 µm5 µm
General Process Filtration
For industrial water, chemicals, inks and process-liquid clarification.
10 µm20 µm30 µm
Coarse Pre-Filtration
For larger particle removal, higher flow and equipment protection.
50 µm70 µm100 µm
String Wound Filter Cartridges by Size
Match overall length, outside diameter, inside diameter and core design to the filter housing.
Standard Lengths
Common lengths shown in the product data.
10" / 250 mm20" / 500 mm30" / 750 mm40" / 1000 mm50" / 1270 mm
Outside Diameter
Standard and large-diameter wound cartridge options.
60 mm62 mm68 mm114 mm
Inside Diameter
Core ID must match the housing support rod or mounting structure.
28 mm ID30 mm IDCustom ID
End Caps & Center Core Options
Each card includes a reserved position for a real end-cap or center-core photo.
222 End Cap
Double O-ring adapter for secure sealing.
Flat Peak Cover
Closed-end support for selected housings.
Flat / Open End
Standard configuration for conventional housings.
PP Center Core
Economical for most compatible water and process applications.
Stainless Steel Core
Extends chemical, temperature and pressure capability.
Additional Interface Options
Custom ends can be supplied from drawings, samples or existing model numbers.
215222High 222226Triangle TipSemi-Winged TipFlat Peak CoverFlat
String Wound Filter Cartridge Specifications
Values organized from the supplied Incefiltration product sheet.
| Category | Specification Item | Available Data |
|---|---|---|
| Product Size | Filtration Accuracy | 1, 3, 5, 10, 20, 30, 50, 70, 100 µm |
| Length | 10" / 250 mm, 20" / 500 mm, 30" / 750 mm, 40" / 1000 mm, 50" / 1270 mm | |
| Diameter | OD 60, 62, 68, 114 mm; ID 28, 30 mm | |
| End Cap Type | Port / Interface Options | 215, 222, High 222, 226, Triangle Tip, Semi-Winged Tip, Flat Peak Cover, Flat and custom ends |
| Operating Conditions | Maximum Yarn Temperature | Polypropylene ≤60°C; absorbent cotton ≤120°C; glass fiber ≤250°C |
| Maximum Differential Pressure | ≤0.25 MPa at 20°C | |
| Reference Highest Flow | 0.3, 0.4, 0.5, 1.1, 1.5, 2.0 and 2.5 m³/h depending on cartridge size and construction | |
| Material Compatibility | Final yarn, core, end and gasket materials must be confirmed against the working liquid. | |
| Note | Hot Water / Steam | A stainless steel insert or center core is required for hot water sanitization or steam sterilization. |
Pure Water Flow Rate Test Data
Finer grades create higher pressure drop, while 50 and 100 µm grades provide lower resistance.
Pressure Drop Trend by Micron Rating
1 µm5 µm10 µm20 µm50 µm100 µm
The chart is a visual selection guide based on the supplied sheet. Actual performance depends on length, winding density, yarn, core, viscosity, temperature, contamination loading, housing and flow.
Typical String Wound Cartridge Applications
Economical depth filtration for water, chemicals, inks, food, coatings and industrial liquids.
Seawater RO Pretreatment
Suspended-solids removal before RO membranes and desalination systems.
Ink Processing
Particle removal from compatible inks and liquid color systems.
Food & Beverage
Process-water and compatible liquid filtration using suitable materials.
Biopharmaceutical
Economical pre-filtration before finer cartridges.
Microelectronics
Pre-filtration of compatible process water and liquids.
Chemical Industry
Depth filtration of compatible acids, alkalis and chemicals.
Petroleum Industry
Particle removal from compatible oils and utility liquids.
Industrial Water
Cooling water, process water and wastewater-reuse pre-filtration.
Custom String Wound Filter Cartridge Service
Incefiltration supports custom yarn, micron rating, winding pattern, dimensions, core, end treatment, gasket and packaging.
Confirm Working Liquid
Provide composition, viscosity, temperature, pressure and contaminant loading.
Select Yarn & Micron
Choose PP, cotton or glass fiber and a 1–100 µm grade.
Match Housing Size
Confirm length, OD, ID, center core, end and gasket.
Sample & Production
Support samples, OEM labels, bulk orders and export packaging.
Need a Custom String Wound Filter Cartridge?
Send your micron rating, yarn material, dimensions, center core, end photo and operating conditions.
String Wound Filter Cartridge FAQ
Common questions before selecting wound depth cartridges.
What micron ratings are available?
Available ratings include 1, 3, 5, 10, 20, 30, 50, 70 and 100 µm.
Which yarn material should I choose?
PP is economical for water and general liquids. Cotton is used for compatible water and oils. Glass fiber is selected for higher-temperature service.
What is the difference between PP and stainless steel cores?
PP cores suit standard service. Stainless steel provides greater strength and can extend temperature, chemical and pressure capability.
Can the end configuration be customized?
Yes. Flat, 215, 222, High 222, 226, Triangle Tip, Semi-Winged Tip, Flat Peak Cover and custom designs can be supplied.
What information is needed for a quotation?
Provide micron rating, yarn, length, OD, ID, core, end type, gasket, liquid, temperature, pressure, flow and quantity.
Request a String Wound Filter Cartridge Quote
Send filtration accuracy, yarn, dimensions, center core and operating requirements.