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 (Imperial)

30 in

Poly-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Highly Asymetric Polysulfone, Length 30 Inches, silicone, DOE industrial product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.2 μm, Highly Asymetric Polysulfone, Length 30 Inches, silicone, DOE industrial

Product ID: PFT0230US
Unit of Measure
1/EA
Min Order Qty
1
Micron
0.2 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 0.45 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

Profile® II, Filter Cartridges, Polypropylene, Length 30 Inches

Product ID: RM3F030H21
Unit of Measure
24/EA
Min Order Qty
24
Removal Rating
3 µm
Membrane Material
Polypropylene
Filter Cartridge Style
RMF-style
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
See All Attributes
DFT Classic®, Filter Cartridges, Removal Rating 100 μm, Length 30 Inches, 316 stainless steel, with Extended Core, Individually wrapped product photo

DFT Classic®, Filter Cartridges, Removal Rating 100 μm, Length 30 Inches, 316 stainless steel, with Extended Core, Individually wrapped

Product ID: G100AW30SEC1S1PK
Unit of Measure
10/EA
Min Order Qty
10
Packaging
Individually wrapped
See All Attributes
DFT Classic®, Filter Cartridges, Removal Rating 1 μm, Length 30 Inches, Polypropylene, FluorocarbonElastomer product photo

DFT Classic®, Filter Cartridges, Removal Rating 1 μm, Length 30 Inches, Polypropylene, FluorocarbonElastomer

Product ID: C001AW30UVM3
Unit of Measure
10/EA
Min Order Qty
10
Packaging
Bulk
See All Attributes
DFT Classic®, Filter Cartridges, Removal Rating 10 μm, Nylon, Length 30 Inches, 316 stainless steel product photo

DFT Classic®, Filter Cartridges, Removal Rating 10 μm, Nylon, Length 30 Inches, 316 stainless steel

Product ID: N010AW30SEC1S
Unit of Measure
10/EA
Min Order Qty
10
Packaging
Bulk
See All Attributes

Nexis® A Series Filter Cartridges, Removal Rating 70 μm, Polypropylene, Length 30 inches, Nitrile, SOE flat closed end external 222 O-ring

Product ID: NXA7030UM18N
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
70 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Nitrile
See All Attributes

Nexis® T Filter Cartridges, Removal Rating 0.5 μm, Polypropylene, Length 30 inches, silicone, SOE fin end external 222 O-rings

Product ID: NXT0530UM8S
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
0.5 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Silicone
See All Attributes
Nexis® T Series Filter Cartridges, NXT2030UM7WS480 product photo

Nexis® T Series Filter Cartridges, Polypropylene, 20 µm, 30 in., Silicone Elastomer, M7

Product ID: NXT2030UM7WS480
Unit of Measure
12/EA
Min Order Qty
12
Removal Rating
20 µm
Membrane Material
Polypropylene
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
Gasket / O-Ring Material
Silicone Elastomer
See All Attributes
DFT Classic®, Filter Cartridges, Removal Rating 5 μm, GlassFiber, Length 30 Inches product photo

DFT Classic®, Filter Cartridges, Removal Rating 5 μm, GlassFiber, Length 30 Inches

Product ID: F005AW30A1PK
Unit of Measure
10/EA
Min Order Qty
10
Packaging
Individually wrapped
See All Attributes

HDC® II, Filter Cartridges, Removal Rating 10 μm, Length 30 Inches, silicone

Product ID: AB3J1007H4
Unit of Measure
6/EA
Min Order Qty
6
Removal Rating
10 µm
Membrane Material
Polypropylene
Filter Cartridge Style
Code 7
Cartridge Length (Imperial)
30 in
Cartridge Length (Metric)
762 mm
Cartridge Length (Metric)
76.2 cm
See All Attributes
618 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.