40″ x 2.5″ .5 Micron String-Wound Filter Cartridge, Polypropylene, Shelco (Case Only)

The 40″ x 2.5″ .5 micron string-wound filter cartridge is designed to fit standard 40″ x 2.5″ housings that accept industry-standard 40-inch sediment cartridges. Confirm your current cartridge length and diameter before ordering.

This Shelco cartridge is only sold by the case. It is built for fine particle reduction in residential and commercial applications where you want consistent sediment control and dependable cartridge construction. The 0.5 micron rating is typically chosen when you need finer filtration for silt, rust fines, and other small particulates that can cloud water or load downstream equipment.

• Model: MS40FP0.5-B-T-Case
• Size: 40″ x 2.5″ standard cartridge format
• Micron rating: 0.5 micron
• Sold as: case of 10 cartridges
• Material: polypropylene (PP)
• Made in USA

40″ x 2.5″ .5 Micron String-Wound Filter Cartridge, Polypropylene (Case Only) Features and Benefits:

• Polypropylene fibers for purity and chemical compatibility
• Meets FDA requirements for food & beverage contact
• Standard cartridges rated for temperatures to 140°F
• High-temp cartridges are available with stainless steel center tubes
• Packaged in individual poly bags for cleanliness
• Available in a wide range of lengths and micron ratings

What is the 40″ x 2.5″ .5 Micron String-Wound Filter Cartridge Used For?

• Prefiltration to protect downstream carbon, RO, DI, UV, and specialty media
• Reducing fine sediment in commercial lines and point of entry setups
• Helping protect valves, meters, and fixtures from particulate wear
• Systems where consistent cartridge performance and repeatable winding quality matter

What are the Benefits of String-Wound Water Filtration?

String-wound cartridges are depth filters. Instead of capturing debris only on the surface, they trap particles through layers of wound media. That depth filtration is often chosen for:

• Strong dirt holding capacity
• More consistent performance through the cartridge life
• Predictable replacement based on pressure drop and visual loading

Shelco MicroSentry cartridges are manufactured using computerized winding processes to produce a consistent winding pattern and repeatable build quality.

Micron rating guidance

A 0.5 micron filtration is an acceptable level of sediment control. It is commonly used when:

• You need finer particulate reduction than the 1 or 5 micron options
• Downstream equipment benefits from tighter sediment control
• You want improved clarity and reduced fine sediment carry-through

Important practical note: finer filtration can load faster in heavy sediment conditions. If your water carries a lot of sand or visible sediment, a staged approach often works best, for example, a coarser prefilter first, then a 0.5 micron as a polishing sediment stage.

Temperature and material notes

• Polypropylene fibers support purity and chemical compatibility.
• Standard cartridges are rated for temperatures up to 140°F.
• Cartridges are packaged in individual poly bags for cleanliness.
• High temperature options can be available with stainless steel center tubes, depending on configuration.

Specifications for the 40″ x 2.5″ .5 Micron String-Wound Filter Cartridge

How Long Does the 40″ x 2.5″ .5 Micron String-Wound Filter Cartridge Last?

Cartridge life depends on sediment load, flow rate, and how quickly pressure drop builds in your housing.

Replace when you notice:

• A meaningful drop in flow or pressure
• Rising differential pressure across the housing (if you monitor it)
• Visible heavy discoloration or loading
• You reach your planned service interval for the application

If you need maximum uptime, consider monitoring the pressure drop so you can replace it before performance is affected.

FAQs About String-Wound Filter Cartridges

Q: What does a 0.5 micron string-wound cartridge remove?
A: It targets fine sediment such as silt and rust fines, along with other small particulates that can cloud water and load downstream equipment.

Q: Will this 40″ x 2.5″ .5 micron string-wound filter cartridge fit my housing?
A: It fits standard housings designed for 40″ x 2.5″ cartridges. Confirm your current cartridge length and diameter before ordering.

Q: Is 0.5 micron too fine for heavy sediment?
A: It can load faster if your water has heavy visible sediment. In those cases, a coarser prefilter first often helps, with a 0.5-micron polishing stage.

Q: Is the 40″ x 2.5″ .5 micron string-wound filter cartridge washable?
A: String-wound cartridges are typically replaced, not washed, because debris is trapped throughout the depth of the media.

Q: Can I use a string-wound filter cartridge before RO, DI, or UV?
A: Yes. Fine sediment control is commonly used to protect downstream stages from particulate fouling.

Q: Will a string-wound sediment cartridge reduce chlorine taste and odor?
A: No. Sediment cartridges target particles. Carbon filtration is used for chlorine taste and odor.

Q: How do I know when to replace a string-wound sediment filter cartridge?
A: Replace when the flow drops, the pressure drop increases, or the cartridge is visibly loaded. Many facilities are also replaced at scheduled intervals to prevent downtime.

Q: Why buy the case instead of a single cartridge?
A: A case supports planned maintenance, reduces reorder interruptions, and keeps spares on hand for high-use systems.

Match your housing size and micron need, then stock up with a case of Shelco 40″ x 2.5″ 0.5 micron string-wound cartridges to keep sediment under control and protect downstream filtration.

*FDA cotton and poly meet the FDA guidelines as acceptable for potable and edible liquid contact according to CFR title 21.

Cap Options

Used in 40″ Shelco Housings