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

Order Products

Brand

Nexis®

NXT 1-20U-DOEE

Product ID: NXT120UDOEE
Unit of Measure
24/EA
Min Order Qty
24
Nexis® T Filter Cartridges, Removal Rating 50 μm, Polypropylene, Length 10 inches, Expand PTFE (gaskets) DOE option FEP encapsulated silicone (O-rings) SOE option, SOE flat closed end external 222 O-rings product photo

Nexis® T Filter Cartridges, Removal Rating 50 μm, Polypropylene, Length 10 inches, Expand PTFE (gaskets) DOE option FEP encapsulated silicone (O-rings) SOE option, SOE flat closed end external 222 O-rings

Product ID: NXT5010UM3T
Unit of Measure
60/EA
Min Order Qty
60
Micron
50 micron
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
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

Nexis® T Filter Cartridges, Removal Rating 25 μm, Polypropylene, Length 19.5 inches

Product ID: NXT25195U
Unit of Measure
10/EA
Min Order Qty
10
Removal Rating
25 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
19.5 in
Cartridge Length (Metric)
495 mm
Cartridge Length (Metric)
49.5 cm
Gasket / O-Ring Material
NA
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Nexis® T Filter Cartridges, Removal Rating 50 μm, Polypropylene, Length 5 inches product photo

Nexis® T Filter Cartridges, Removal Rating 50 μm, Polypropylene, Length 5 inches

Product ID: NXT505U
Unit of Measure
60/EA
Min Order Qty
60
Micron
50 micron

Nexis® A Series Filter Cartridges, Removal Rating 10 μm, Polypropylene, Length 4 inches, EPDM

Product ID: NXA104UM3E
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
10 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
4 in
Cartridge Length (Metric)
102 mm
Cartridge Length (Metric)
10.2 cm
Gasket / O-Ring Material
EPDM
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This product is currently not available. Please contact us for more information.

Nexis® T Filter Cartridges, Removal Rating 120 μm, Polypropylene, Length 10 inches, silicone, M5 - DOE, internal 120 O-rings (retrofits 213 O-ringstyle)4

Product ID: NXT12010UM5S
Unit of Measure
30/EA
Min Order Qty
30
Removal Rating
120 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
10 in
Cartridge Length (Metric)
254 mm
Cartridge Length (Metric)
25.4 cm
Gasket / O-Ring Material
Silicone
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Nexis® T Filter Cartridges, Removal Rating 5 μm, Polypropylene, Fluorocarbon Elastomer, SOE flat closed end external 222 O-rings

Product ID: NXT540NM3V181
Unit of Measure
24/EA
Min Order Qty
24
Removal Rating
5 µm
Membrane Material
Polypropylene
Gasket / O-Ring Material
Fluorocarbon Elastomer
End Configuration Code
M3
End Configuration
M3 - SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0)4
Cartridge Type
NXT
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Nexis® A Series Filter Cartridges, Removal Rating 3 μm, Polypropylene, Length 40 inches, silicone

Product ID: NXA340UM8S
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
3 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
40 in
Cartridge Length (Metric)
1016 mm
Cartridge Length (Metric)
101.6 cm
Gasket / O-Ring Material
Silicone
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Nexis® T Filter Cartridges, Removal Rating 1 μm, Polypropylene, Length 30 inches, SOE metal spring/polypropylene cap saw cut end

Product ID: NXT130USI
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
1 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
NA
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Nexis® T Filter Cartridges, Removal Rating 3 μm, Polypropylene, Length 30 inches, DOE Santoprene gasket seal

Product ID: NXT330UH21
Unit of Measure
20/EA
Min Order Qty
20
Removal Rating
3 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
NA
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732 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.