Bleached Cotton String Wound Cartridge Filters provide high dirt holding capacity for particles whose micron diameters are common in liquid processing industries. Bleached cotton wound cartridges are made of bleached cotton wound yarn and stainless steel central or pp core, with double open end (DOE) or types of end cap, such as 222/fin,226/flat etc.. Cotton string wound cartridges are designed as honeycomb-shap to ensure no short fibers break away. In addition, bleached cotton string wound cartridges provide high flow rate, good chemical resistance, excellent efficiency filtration and long service life. Cotton string wound filters are widely used in industrial oil/water separation, petrochemical process, power plant water treatment and many other crucial industrial fields.


Filter Media

Bleached Cotton


5", 9.75", 9.8", 10", 20", 30", 40", 50" (According to customers requirements)

Inside Diameter

28mm, 30mm (Special ID can be customized)

Outside Diameter

2.4"(61mm), 2.5"(63mm), 2.55"(65mm) Special OD is accepted

Filtration Rating

1μm, 5μm, 10μm, 20μm, 30μm, 50μm, 75μm, 100μm


PP, SUS304, SUS316


Silicone, EPDM, Viton, Buna

End Cap

DOE, 222/Flat(SOE), 222/Fin(SOE), 226/Flat(SOE), 226/Fin(SOE)



● Cotton wound cartridges have multiple filtration precision

● Without odor, foaming, adhesives and no fine fibre drops out

● Stable structure, high flow rates and low differential pressures

● Wide chemical compatibility for oil, water, acids and alkalis etc.

● Withstand high temperature and consistence of good performance

● Cotton wound filters own various of cores and end caps, fit for housings



PCB industry


Plating Solutions

Pre-RO filtration

Oil water separation

Petrochemical Process

Power plant water treatment

Electronics and Semiconductor


Operation Data for Cotton String Wound Cartridge Filters

Maximum Operating Temperature

Bleached Cotton with SUS Core : 150 (300 )

Max. Differential Pressure

2.7 bar at 27 (50 psi at 80)

1.4 bar at 60 (20 psi at 140)

0.7 bar at 82 (10 psi at 180)

Recommend Change out Differential Pressure

1 bar (14 psi)