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

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Industries

Industrial Manufacturing

Industries

Oil & Gas

Filter Media

Polypropylene

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 10 Inches, Nitrile product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 10 Inches, Nitrile

Product ID: PFT02510UN
Unit of Measure
1/EA
Min Order Qty
1
0.25 µm
Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 10 Inches, EPDM, SOE flat closed end external 222 O-rings product photo

Poly-Fine® II, Filter Cartridges, Removal Rating 0.25 μm, Polypropylene, Length 10 Inches, EPDM, SOE flat closed end external 222 O-rings

Product ID: PFT02510UEM3
Unit of Measure
30/EA
Min Order Qty
30
0.25 µm
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
0.25 µm
NXA 1-30U-M3S product photo

NXA 1-30U-M3S

Product ID: NXA130UM3S
Unit of Measure
12/EA
Min Order Qty
12
1 micron
NXT 1-10U-M20E product photo

NXT 1-10U-M20E

Product ID: NXT110UM20E
Unit of Measure
30/EA
Min Order Qty
30
1 micron
NXT 100-19.5U product photo

Nexis, NXT, 100 μm, 49.5 cm (19.5 in), DOE industrial (no end caps)

Product ID: NXT100195U
Unit of Measure
10/EA
Min Order Qty
10
100 micron
NXA 20-10U product photo

Nexis, NXA, 20 μm, 25.4 cm (10 in), DOE industrial (no end caps)

Product ID: NXA2010U
Unit of Measure
30/EA
Min Order Qty
30
20 micron
NXT 5-10U product photo

NXT 5-10U

Product ID: NXT510U
Unit of Measure
30/EA
Min Order Qty
30
5 micron
CLR 20-30 product photo

20um, 30", DOE

Product ID: CLR2030
Unit of Measure
12/EA
Min Order Qty
12
76.2 cm / 30 in
20 micron
DFT Classic®, Filter Cartridges, Removal Rating 20 μm, Polypropylene, Length 30 Inches, 316 stainless steel, Bulk packaging product photo

DFT Classic®, Filter Cartridges, Removal Rating 20 μm, Polypropylene, Length 30 Inches, 316 stainless steel, Bulk packaging

Product ID: P020RW30S
Unit of Measure
10/EA
Min Order Qty
10
Bulk
See All Attributes
CLR 5-29.25 product photo

CLR 5-29.25

Product ID: CLR52925
Unit of Measure
12/EA
Min Order Qty
12
74.3 cm / 29.25 in
5 micron
NXT 50-30U-M3E product photo

Nexis, NXT, 50 μm, 76.2 cm (30 in), SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0), EPDM gasket

Product ID: NXT5030UM3E
Unit of Measure
12/EA
Min Order Qty
12
50 micron
13 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.