String Wound Cartridges

Explore our full range of string wound filter cartridges, engineered for reliable and cost-effective sediment removal in both residential and commercial water filtration systems. These depth-type filters are made by tightly winding polypropylene or cotton yarn over a rigid core, forming a graded density structure that effectively traps particles throughout the entire cartridge body.

Ideal for use in Big Blue, Slimline, and industrial housings, string wound cartridges are suitable for pre-treatment in reverse osmosis, UV, and whole-house filtration systems. They are particularly effective for removing sand, silt, rust, scale, and other suspended solids from municipal, borehole, or rainwater supplies.

This collection includes:

• Slimline String Wound Cartridges – 10” & 20” sizes for standard domestic housings
• Big Blue String Wound Cartridges – 10”, 20” & 30” sizes for higher flow applications
• Micron Ratings from 1μm to 100μm – Tailored to specific sediment load
• Polypropylene & Cotton Yarn Options – For potable and non-potable applications
• NSF-Certified Options Available
• Central Cores – Polypropylene or stainless steel (on request for high-pressure systems)

✔ High dirt-holding capacity with depth filtration
✔ Excellent chemical resistance
✔ Suitable for hot and cold water systems
✔ Ideal for protecting downstream filters and equipment
✔ Easy to install and replace