20 x 2.5 Inch Stainless Steel Filter Cartridge 304 Washable Sediment Mesh Water Filter 1- for 20 Inch Housing

REORDERING? PLEASE MAKE SURE YOU ARE ON THE RIGHT LISTING.

This listing is for 2.5 inch stainless steel filter cartridges (outer diameter about 60 mm). The 4.5 inch Jumbo / Big cartridge (outer diameter about 102 mm) is a different listing. Please do not order from the wrong link.

When you buy again, choose the same diameter, length and micron as your last order, or measure your old cartridge first.

Not sure which one you need? Please contact customer service before you order. Send us a photo of your housing or old cartridge and we will check it for you.

This is a 20*2.5 inch stainless steel filter element, stainless steel cartridge, universal 20inch stainless steel filter housing.

Pay attention to the product parameters, if you need products of other sizes, please contact customer service.

This Product Is 304 Stainless Steel. If You Need 316l Stainless Steel, Please Contact Customer Service.

STAINLESS STEEL MESH WATER FILTER — SUS 304 (FACTORY DIRECT)

Factory-direct stainless steel mesh filter element, reusable and washable, built for precise particle filtration in water systems.

- We are the factory: wholesale and bulk-quantity discounts available - message us for a quote.

- This listing is 304 stainless steel. Need 316L? Just contact us.

Just tell us what you need.

Have a question? Message us any time - we reply within 24 hours.

1) CHOOSE THE RIGHT SIZE BEFORE YOU ORDER

Getting the size right is the single best way to avoid a return:

- Housing diameter: 2.5 inch (slim) or 4.5 inch (Big Blue) - which does your housing use?

- Length and diameter: does the cartridge fit your installation space?

- Working pressure: within your system's rated range?

Not sure? Send us a photo or the model of your housing and we will confirm the right fit. We would much rather help you order correctly the first time.

2) GOOD TO KNOW - NORMAL CHARACTERISTICS (NOT DEFECTS)

A few things are simply how a woven, welded mesh filter is built:

- Weld points on the body: our elements are made by welding, so small weld points form during production. These are controlled weld joints - a normal, quality-checked part of manufacturing - not rust. Slight dark color (heat tinting) near welds is also normal.

- Bright ring of light at the end caps: held to a light, a bright ring shows where the mesh meets the solid end cap. It is a structural transition, not a gap - sealing is done by the O-ring and housing compression, so water will not bypass the filter.

- Light and water pass through the mesh body: that is exactly how mesh filtration works - water flows through while particles larger than the rated size are caught on the surface.

3) GENUINE SUS 304 - AND HOW TO VERIFY IT

- Slight magnetism is normal: after cold working (threading, pressing, bending, welding), 304 - and even higher-grade 316 - can become slightly magnetic. This is well documented and does not mean a lower grade.

- A magnet test cannot verify grade: it cannot tell genuine 304, genuine 316, and lower steel apart. Home chemical tests (vinegar, salt, bleach) are not recognized by any ASTM or ISO standard either.

- Valid methods: XRF or OES spectral analysis (ASTM E1588).

- Please note: this is a woven mesh element, not a sintered metal filter, so bubble-point or light tests used for sintered media do not apply here. The correct functional test is to install it with its O-ring and run it at rated pressure.

4) PORE SIZE CANNOT BE JUDGED BY EYE

For reference:

Mesh (governing) Micron SKU Eye reference

Note: the mesh count is the governing specification; the micron figure is approximate (≈) and for reference only, as there is no universal mesh-to-micron formula. The final rating is defined by mesh number. Lab verification follows ASTM E128.

5) DESIGNED FOR WATER - KNOW THE LIMITS

- Optimized for: municipal tap-water pre-filtration, industrial process water, irrigation, and cooling water.

- Other fluids - please ask first: oils (vegetable / cooking / hydraulic), fuels, chemical solvents, beverages, and fluids above 80C / 176F.

This is a mechanical particle filter only. It captures suspended solids, sediment, rust, and coarse particles.

6) MORE FROM OUR FACTORY (almost anything in stainless steel water treatment)

If you need something else, just message us:

- Other filter elements: PP cotton, pleated, wire-wound, and other general water-purifier elements

- Material: 316L stainless steel (this listing is 304)

- Housings & systems: stainless steel filter housings, Big Blue housings, bag filters, precision / cartridge filters, air filters, large-flow filters, clamp-type 3 / 5 / 7-core, multi-core & multi-bag housings, self-cleaning filters, quartz sand filters

- Custom: bespoke stainless steel parts, silicon-phosphorus dosing tanks, sterile water tanks, and made-to-drawing fabrication

If it is stainless steel water treatment, we can likely make it - tell us what you need and we will quote.

7) AFTER-SALES AND HELP

- Quality issues (defect or transit damage): send clear photos or a short video within 3 days of receipt and we will arrange a replacement, refund, or reshipment.

- Wrong size ordered: the most common cause of returns - please confirm your specifications before ordering, and message us if unsure; we are glad to help you choose.

- Any questions or concerns: please message us before opening a dispute. We reply within 24 hours and always aim to resolve things quickly and fairly.

The information in this note is for reference only and is intended to provide a general understanding of the relationship between mesh and microns. While we strive to ensure the accuracy and completeness of the content, we do not guarantee the applicability or accuracy of the information in all cases. The conversion of mesh to microns may vary depending on the material, measurement method and industry standards. Therefore, in specific applications, it is recommended that users verify according to actual needs and refer to relevant industry standards or professional opinions.