Stringflex Series

Summary

Product Identification

Stringflex Series Wound Depth Cartridges are industrial depth filters manufactured with precise winding techniques to create a diamond pattern for true depth filtration. They are designed for a wide range of demanding commercial and industrial applications, offering high performance, long life, and minimal fiber migration.

Features/Benefits

• Suitable for low to high temperature applications
• Excellent particulate reduction with true depth filtration
• Extended cartridge life maximizes profitability
• Minimal fiber migration
• Available in natural, bleached or FDA-listed cotton, polypropylene, and fiberglass cord materials
• Bleached cotton cartridges are manufactured with FDA-listed materials
• Choice of core material, O-rings, lengths, and endcaps
• 2.5” (64 mm) nominal diameter

Applications

• Commercial
• General Industrial
• High Corrosion
• High Pressure
• High Temperature
• Hydraulic

Operating Limits

Maximum Temperature

• Fiber Media:
  • Natural cotton: 300˚F (149˚C)
  • Bleached cotton (FDA): 300˚F (149˚C)
  • Fiberglass: 750˚F (400˚C)
  • Polypropylene: 180˚F (82˚C)
• Core Material:
  • Tinned steel: 400˚F (204˚C)
  • Polypropylene: 180˚F (82˚C)
  • 304 Stainless steel: 750˚F (400˚C)

Pressure

• Recommended Change-Out: 25 PSID (1.7 bar)
• Max. Differential Pressure at Ambient Temp.: 60 psi (4.1 bar)

Mechanical / Hydraulic

• Internal OD: 1” (25 mm) nominal
• Outer OD: 2.5” (64 mm) nominal
• Pressure Drop vs. Flow Rate: See the official PDF for exact tabulated values and graphs.

Ordering Options

Stringflex cartridges are customizable with various options:

Micron Rating (µ)

• 0.5*
• 1, 3, 5, 10, 20, 25, 30, 50, 75, 100, 150, 200, 250, 400
• *0.5 micron rating is not intended for the removal of microbial pests including virus, bacteria, and cysts.

Length (IN.)

• 9.75, 10, 20, 30, 40, 50

Diameter (IN.)

• B = 2.5

Cord Material

• P = Polypropylene
• C = Natural Cotton
• B = Bleached Cotton (FDA)
• F = Fiberglass

Core Material

• P = Polypropylene
• T = Tinned Steel
• SS = Stainless Steel

Endcap Material

• P = Polypropylene
• X = None

Endcap Style

• D = DOE (Double Open End)
• S2 = 222 Flat
• F2 = 222 Fin
• S6 = 226 Flat
• F6 = 226 Fin
• S4 = Polypropylene Core Extender

Seal Material

• B = Buna-N
• S = Silicone
• E = EPDM
• V = FKM
• X = None

Case Quantity

• 10” length: 30 cartridges
• 20”-50” length: 15 cartridges

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or revisions present in the complete OEM PDF datasheet. For contractual data and the most up-to-date specifications, always refer to the official PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror