String-wound Depth Filter Cartridges

A Long Service Life and High Contaminant Loading Capacity 

Pall’s string-wound depth filters are designed for advanced and efficient particulate removal performance and high contaminant holding capacity. Compared to traditional polypropylene or polyester materials, these filter cartridges use woven media yarn around the core and have high chemical, temperature, and process fluid compatibility. Available with 10+ different medium options these cartridges are also an economical low-cost choice compared to depth and pleated style filters. 

Depth Filter Cartridges
Depth Filter Cartridges
Pleated Depth Filter Cartridges
Pleated Depth Filter Cartridges
Pleated Filter Cartridges
Pleated Filter Cartridges
String-Wound Filter Cartridges
String-Wound Filter Cartridges

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Cartridge Length (Metric)

508 mm

FEATURED

Emflon® PFRW Filter Cartridge, AB2PFR7WH4

Product ID: AB2PFR7WH4
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
0.2 µm
Membrane Material
Double Layer PTFE
Effective Filtration Area (Metric m²)
1.6 m²
Filter Cartridge Style
Code 7
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
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Profile® II, Filter Cartridges, Polypropylene, Length 20 Inches

Product ID: RM2F070H21
Unit of Measure
48/EA
Min Order Qty
48
Removal Rating
7 µm
Membrane Material
Polypropylene
Filter Cartridge Style
RMF-style
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
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Nexis® A Series Filter Cartridges, Removal Rating 5 μm, Polypropylene, Length 20 inches, silicone, SOE fin end external 226 O-rings product photo

Nexis® A Series Filter Cartridges, Removal Rating 5 μm, Polypropylene, Length 20 inches, silicone, SOE fin end external 226 O-rings

Product ID: NXA520UM7S
Unit of Measure
12/EA
Min Order Qty
12
Micron
5 micron
Poly-Fine® II, Filter Cartridges, Removal Rating 0.8 μm, Polypropylene, Length 20 Inches, Nitrile, SOE flat closed end external 222 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.8 μm, Polypropylene, Length 20 Inches, Nitrile, SOE flat closed end external 222 O-rings

Product ID: PFT0820UNM3
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.8 µm
Nexis® T Filter Cartridges, Removal Rating 200 μm, Polypropylene, Length 20 inches product photo

Nexis® T Filter Cartridges, Removal Rating 200 μm, Polypropylene, Length 20 inches

Product ID: NXT20020U
Unit of Measure
10/EA
Min Order Qty
10
Micron
200 micron

Duo-Fine®, Filter Cartridges, Removal Rating 1 μm, Length 20 Inches, SOE fin end, external 222 O-rings

Product ID: DFPT120ETM8563
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
1 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
End Configuration Code
M8
End Configuration
SOE fin end, external 222 O-rings (retrofits other manufacturers’ Code 5) 3
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Poly-Fine® II, Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 20 Inches, silicone, SOE fin end external 226 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 20 Inches, silicone, SOE fin end external 226 O-rings

Product ID: PFT1020USM7
Unit of Measure
12/EA
Min Order Qty
12
Micron
10 µm

Duo-Fine® , Filter Cartridges, Removal Rating 0.45 μm, Length 20 Inches, Nitrile

Product ID: DFN04520AN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.45 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
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Duo-Fine® , Filter Cartridges, Removal Rating 3 μm, Length 20 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps

Product ID: DFN320UN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
3 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes

Profile® II, Filter Cartridges, Polypropylene, Length 20 Inches

Product ID: R2F700
Unit of Measure
1/EA
Min Order Qty
1
Membrane Material
Polypropylene
Filter Cartridge Style
RF-style
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
End Configuration
R type housing
See All Attributes
DFT Classic®, Filter Cartridges, Removal Rating 30 μm, Length 20 Inches, 316 stainless steel, Bulk packaging product photo

DFT Classic®, Filter Cartridges, Removal Rating 30 μm, Length 20 Inches, 316 stainless steel, Bulk packaging

Product ID: C030AW20S
Unit of Measure
10/EA
Min Order Qty
10
Packaging
Bulk
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Profile® II, Filter Cartridges, Polypropylene, Length 20 Inches

Product ID: R2FYM
Unit of Measure
24/EA
Min Order Qty
24
Membrane Material
Polypropylene
Filter Cartridge Style
RF-style
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
End Configuration
R type housing
See All Attributes

This product is currently not available. Please contact us for more information.

549 Items

Description

String-wound filter cartridges are a type of depth filter cartridge that is made by weaving yarn (cotton, glass fiber, polypropylene, polyester, nylon, and polyphenylene sulfide (PPS))around a core usually of 304 SS or 316 SS. 

Product Highlights:
  • High chemical and temperature compatibility
  • 10+ different medium options 
  • Economical choice

Specifications

Product Attributes Values
String-Wound Filters Filter Medium
  • Bleached cotton
  • Standard cotton
  • Natural cotton
  • Glass fiber
  • Heat purified glass fiber
  • Premium polypropylene
  • Standard polypropylene
  • Rayon
  • Polyester
  • Nylon
  • Acrylic
  • Polyphenylene sulfide (PPS)
  • Polytetrafluoroethylene (fluoropolymer)

Filter Grade Range

 0.5 μm to 350 μm
Length 10.2 cm (4 in.) to 127 cm (50 in.)

Applications/Uses

Pall’s string-wound filter cartridges are used for a variety of applications, including chemicals and polymer, oil and gas, and microelectronics.

Chemicals and Polymer

  • Midstream Process Water 
  • Poly Commodity Raw Material (Fluids)
  • Poly Commodity Intermediates (Fluids)
  • Poly Engineered & Special Raw Material (Fluids)
  • Poly Engineered & Special Intermediate (Fluids)

Oil and Gas

  • Upstream Offshore Boiler Water
  • Upstream Offshore Produced Water
  • Upstream Onshore Produced Water
  • Upstream Onshore Surface Discharged Water
  • Midstream Process Water
  • Upstream Injection Water & SRU

Microelectronics

  • Acid etch systems - including Piranha Etch Solvent Strip applications
  • Most aggressive and/or high temperature acids or solvents

Chemicals

  • Polishing of chemical solutions
  • Bulk industrial chemicals
  • Solvents
  • Acids
  • Bases
  • Monomers
  • Process and cooling water

Magnetic Coatings

  • Audio
  • Video & computer tape
  • Floppy discs
  • Computer hard discs
  • Solvents

Photographic

  • Photo emulsions
  • Chemicals
  • Wash & rinse water

Oil Production

  • Well completion fluids
  • Water flood

Air & Gas

  • Compressed air
  • Instrument air
  • Nitrogen
  • Hydrogen
  • Helium
  • Freon
  • Most corrosive gases

Other

  • Solution mining
  • Deep well disposal
  • Paint
  • Ink & coatings
  • Lubricating oils
  • Electropolishing solutions
  • Plating solutions
  • Pigments & dyes
  • Cleaning fluids
  • Adhesives

FAQs

1. Which are the two series that Pall offers for string-wound filters?

Pall offers string-wound filters in the DFT Classic and Encore Series.

 

2. Why choose Pall’s string-wound depth filters?

Pall’s string-wound depth filters are designed for advanced and efficient particulate removal performance and high contaminant holding capacity. These filter cartridges have high chemical, temperature, and process fluid compatibility compared to traditional polypropylene or polyester materials and come with 10+ different medium options.