Sediment Cartridges Custom Manufactured
String Wound Sediment Cartridges
If you cannot find what you are looking for in our standard product line, SWT can provide custom manufactured string wound cartridges. To avoid confusion and speed up the quote process, please use the following part number matrix when requesting custom designs.
Part Number Matrix for Ordering SWT Custom String Wound Sediment Cartridges
  NU–   C   20   R   10   S        
  PRODUCT CODE   (ME)   (MR)   (DIA)   (LN)   (CM)   (CC)   (EC)   (CE)  
(ME) MEDIASee Media Selection Guide below.
U = Natural Cotton; CCU = White Cotton; C = FDA Bleached Cotton; P = Polypropylene;
PD = FDA Polypropylene; F = Fibrillated Polypropylene; R = Rayon (Viscose); K = Polyester;
N = Nylon; O = Acrylic; G = Fiberglass; GH = Baked Fiberglass
0.5, 1, 3, 5, 10, 15, 20, 25, 30, 40, 50, 75, 100, 125, 150, 200
B = 1.375; T = 2; E = 2.25; F = 2.375; R = 2.5; H = 2.625; S = 2.75; L = 2.875; P = 3;
BB = 4; J = 4.5; K = 4.625; X = As Specified
3.75, 4, 5, 6, 7, 8, 9, 9.75, 10, 12, 12.5, 18, 19.5, 20, 27, 29.5, 30, 36, 39, 40, 50, 60, 70
T = Tin Plated Steel; P = Polypropylene; PG = Fiberglass Filled Polypropylene;
PH = Heavy Wall Polypropylene; A = 316 Stainless Steel; S = 304 Stainless Steel;
X = As Specified
No Symbol = None; V = As Specified
S = Metal Cap 2 inch Spring; SA = Metal Cap 2.5 inch Spring; W = Wild Cat Metal Spring Assembly;
PM = Plastic Cap Metal Spring; O = 222 End Cap; PS = Plastic Spring; F = Fin Cap;
C = Solid Plastic Cap; CB = Plastic Cap Buna Gasket; B = Buna Basket; N = Plastisol End Cap;
NG = Plastisol End Gasket; 06 = 226 End Cap
E = Poly Core Insert; F = Stainless Steel Insert; EC = Tin or Stainless Steel Crimped Core
Media Selection Guide for SWT Custom String Wound Sediment Cartridges
Natural Cotton (U)
For oils, water, paints, organic solvents, alcohols, petroleum. For use to 300ºF.

FDA Bleached Cotton (C)

Bleached to meet FDA standards for distilled water, beverages, vegetable oils, petroleum, fatty acid, and alcohols. For use to 300ºF. Poor microorganism resistance.

Polypropylene (P) — “Standard Polypropylene”
Recommended for concentrated acids and alkalies, strong oxidizing agents, corrosive fluids and gases. FDA and non-FDA available—consult factory. Easily incinerated to trace of ash. Excellent microorganism resistance. For use to 200ºF.

FDA Polypropylene (PD) — “Utility Grade Polypropylene”
Same applications as standard polypropylene but less consistency in appearance due to discoloration, nicknamed “rainbow.” For use to 200ºF. Primary used in waste water treatment and non-critical, high volume applications.

Fibrillated Polypropylene (F) — “Electronic Grade”
Non-migrated slit film polypropylene recommended for use in ultra-pure liquids, electronics, and plating where non-leaching is critical. No extractables or sizing agents present. Chemical resistance equal to standard polypropylene. Low moisture absorption and outstanding abrasion resistance. Lowest static propensity of any man-made fiber. High dry or wet strength.

Rayon (R) — “Viscose Rayon”
Fluid compatibility simular to bleached cotton, but has no more coarse fiber and is less absorbent than cotton. Swells in aqueous solutions. For use to 300ºF.

Polyester (K)
Chemical resistance similar to polypropylene, with high temperature resistance. For use to 350ºF.

Nylon (N)

For special process applications, concentrated alkalies, and hydrocarbons. Excellent microorganism resistance. For use to 300ºF.

Acrylic (O) — “Modacrylic”
For strong acids, concentrated alkalies, and oxidizing agents. For use to 200ºF. Not recommended for organic solvents.

Baked Fiberglass (GH) — “Heat Cleaned Glass Fiber”
Trace oil removed by heat cleaning to yield virgin glass fiber. Recommended for high corrosion applications. For use to 750ºF during manufacturing process.
Safe Water Technologies, Inc.
996 Bluff City Boulevard
Elgin, IL 60120 USA
Telephone: +1.847.888.6900
Facsimile: +1.847.888.6924

Last Updated: November 6, 2014