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. 

Filter Cartridges
Filter Cartridges

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Filter Media

Polypropylene

Claris® Filter Cartridge, CLR540W480

Product ID: CLR540W480
Unit of Measure
24/EA
Min Order Qty
24
Removal Rating
5 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
40 in
Cartridge Length (Metric)
1016 mm
Cartridge Length (Metric)
101.6 cm
Gasket O-Ring Code
Blank
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Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 40 Inches, Nitrile product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 40 Inches, Nitrile

Product ID: PFT02540UN
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.25 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 30 Inches, Fluorocarbon Elastomer, SOE fin end external 226 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 30 Inches, Fluorocarbon Elastomer, SOE fin end external 226 O-rings

Product ID: PFT02530UVM7
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.25 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 40 Inches, silicone, SOE fin end external 222 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 40 Inches, silicone, SOE fin end external 222 O-rings

Product ID: PFT02540USM8
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.25 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 10 Inches, Expanded PTFE gaskets FEP encapsulated silicone Orings, DOE industrial product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 10 Inches, Expanded PTFE gaskets FEP encapsulated silicone Orings, DOE industrial

Product ID: PFT04510UT
Unit of Measure
30/EA
Min Order Qty
30
Micron
0.45 µm
Poly-Fine® II Filter Cartridge, PFT04510USM7W480 product photo

Poly-Fine® II Filter Cartridge, PFT04510USM7W480

Product ID: PFT04510USM7W480
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 10 Inches, Expanded PTFE gaskets FEP encapsulated silicone Orings, SOE flat closed end external 222 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 10 Inches, Expanded PTFE gaskets FEP encapsulated silicone Orings, SOE flat closed end external 222 O-rings

Product ID: PFT04510UTM3
Unit of Measure
30/EA
Min Order Qty
30
Micron
0.45 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 20 Inches, FEP encapsulated Fluorocarbon Elastomer Orings, SOE flat closed end external 222 O-rings product photo

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

Product ID: PFT04520UFM3
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 20 Inches, silicone, SOE fin end external 222 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 20 Inches, silicone, SOE fin end external 222 O-rings

Product ID: PFT04520USM8
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 30 Inches, silicone, DOE industrial product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.45 μm, Polypropylene, Length 30 Inches, silicone, DOE industrial

Product ID: PFT04530US
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm
PolyFine-II Filter Cartridge, Polyproylene, 0.45 µm, 60 in, Silicone Elastomer, M8 product photo

PolyFine-II Filter Cartridge, Polyproylene, 0.45 µm, 60 in, Silicone Elastomer, M8

Product ID: PFT04560USM8
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.45 µm
Poly-Fine® II Filter Cartridge, PFT0810UEW480 product photo

Poly-Fine® II Filter Cartridge, PFT0810UEW480

Product ID: PFT0810UEW480
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.8 µm
1,904 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.