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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Availability

In Stock

Cartridge Length (Imperial)

20 in

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

Product ID: RM2F100H21TIMONIUM
Unit of Measure
24/EA
Min Order Qty
24
Removal Rating
10 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
See All Attributes
NXA 2-20U-M3E product photo

Nexis, NXA, 2 μm, 50.8 cm (20 in), SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0), EPDM gasket

Product ID: NXA220UM3E
Unit of Measure
12/EA
Min Order Qty
12
Micron
2 micron

Poly-Fine® XLD Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 20 inches, silicone, DOE industrial

Product ID: XLD1020US
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
10 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
Silicone
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Poly-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Highly Asymetric Polysulfone, Length 20 Inches, EPDM product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Highly Asymetric Polysulfone, Length 20 Inches, EPDM

Product ID: PFT0220UE
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.2 µm

Nexis® T Filter Cartridges, Removal Rating 25 μm, Polypropylene, Length 20 inches

Product ID: NXT2520U
Unit of Measure
20/EA
Min Order Qty
20
Removal Rating
25 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
NA
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Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 20 Inches, Nitrile, DOE industrial, 100 Bubble Test product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 20 Inches, Nitrile, DOE industrial, 100 Bubble Test

Product ID: PFT04520UNB
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm

HDC® II Filter Cartridges, Removal Rating 2.5 μm, Length 20 inches, silicone

Product ID: AB2J0257H4
Unit of Measure
6/EA
Min Order Qty
6
Removal Rating
2.5 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Gasket / O-Ring Material
Silicone
Cartridge Outer Diameter (OD) (Imperial)
2.75 in
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Profile® UP Filter Cartridges, Removal Rating 40 μm, Length 20 inches

Product ID: AB2UY4008PH1
Unit of Measure
1/EA
Min Order Qty
1
Removal Rating
40 µm
Cartridge Length (Imperial)
20 in
Cartridge Length (Metric)
508 mm
Cartridge Length (Metric)
50.8 cm
Cartridge Outer Diameter (OD) (Imperial)
2.75 in
Cartridge Outer Diameter (OD) (Metric)
7 cm
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Profile® II, Filter Cartridges, Polypropylene, Length 20 Inches, Timonium

Product ID: RM2F030H21TIMONIUM
Unit of Measure
24/EA
Min Order Qty
24
Removal Rating
3 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
See All Attributes

Duo-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Length 20 Inches, Fluorocarbon Elastomer, SOE flat closed end external 222 O-rings

Product ID: DFNT04520UVM3
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
Fluorocarbon Elastomer
End Configuration Code
M3
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Duo-Fine® , Filter Cartridges, Removal Rating 10 μm, Length 20 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps

Product ID: DFN1020AN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
10 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
Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 20 Inches, EPDM, DOE industrial product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 20 Inches, EPDM, DOE industrial

Product ID: PFT02520UE
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.25 µm
70 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.