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

Order Products

Product Type

Filter Cartridges

Cartridge Length (Metric)

743 mm

Poly-Fine® II, Filter Cartridges, Removal Rating 5 μm, Polypropylene, Length 29.25 Inches product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 5 μm, Polypropylene, Length 29.25 Inches

Product ID: PFT52925UE
Unit of Measure
1/EA
Min Order Qty
1
Micron
5 µm
NXA 10-29.25U-DOEV product photo

Nexis, NXA, 10 μm, 74.3 cm (29.25 in), DOE with elastomer gasket seals and end caps, Fluorocarbon Elastomer gasket

Product ID: NXA102925UDOEV
Unit of Measure
1/EA
Min Order Qty
1
Micron
10 micron

Nexis® A Series Filter Cartridges, Removal Rating 5 μm, Polypropylene, Length 29.25 inches

Product ID: NXA52925U
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
5 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes

Claris® Filter Cartridges, Removal Rating 20 μm, Polypropylene, Length 29.25 inches

Product ID: CLR202925
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
20 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes

Nexis® T Filter Cartridges, Removal Rating 15 μm, Polypropylene, Length 29.25 inches

Product ID: NXT152925U
Unit of Measure
20/EA
Min Order Qty
20
Removal Rating
15 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes

Nexis® T Filter Cartridges, Removal Rating 100 μm, Polypropylene, Length 29.25 inches, DOE industrial (no end caps)

Product ID: NXT1002925U30MM
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
100 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes

Nexis® T Filter Cartridges, Removal Rating 1 μm, Polypropylene, Length 29.25 inches, silicone, DOE - DOE with elastomer gasket seals and end caps

Product ID: NXT12925UDOES
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
1 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
Silicone
See All Attributes
Poly-Fine® II, Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 29.25 Inches product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 29.25 Inches

Product ID: PFT102925UE
Unit of Measure
1/EA
Min Order Qty
1
Micron
10 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 3 μm, Polypropylene, Length 29.25 Inches product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 3 μm, Polypropylene, Length 29.25 Inches

Product ID: PFT32925US267
Unit of Measure
1/EA
Min Order Qty
1
Micron
3 µm

Claris® Filter Cartridges, Removal Rating 3 μm, Polypropylene, Length 29.25 inches

Product ID: CLR32925
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
3 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes

Duo-Fine® , Filter Cartridges, Removal Rating 3 μm, Length 29.25 Inches, Nitrile, Blank - DOE with elastomer gasket seals & end caps

Product ID: DFN32925AN
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
3 µm
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
Nitrile
End Configuration
Blank - DOE with elastomer gasket seals & end caps
See All Attributes

Nexis® T Filter Cartridges, Removal Rating 50 μm, Polypropylene, Length 29.25 inches

Product ID: NXT502925U
Unit of Measure
20/EA
Min Order Qty
20
Removal Rating
50 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
29.25 in
Cartridge Length (Metric)
743 mm
Cartridge Length (Metric)
74.3 cm
Gasket / O-Ring Material
NA
See All Attributes
43 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.