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Guide to Liquid Filter Bags

Industry standard Liquid Filter Bags include Felt and Mesh Filter Bags. Felt bags can be sewn or welded to meet your needs. The different ring options provide great filtering for a multitude of applications. With a wide range of micron sizes we can support and partner with many industries like chemical, food, paper, petroleum, adhesives, paints, water treatment, beverages, pharmaceutical and more! Check out a few of our bags today!

Bag Types Ring Types Building A Part Number

Felt Bags

(Felt Filter Bag w/ Snap Ring shown. Part #21WE23)
Benefits of Felt

  • Felt bag materials meet FDA regulations.
  • High dirt holding capacity
  • Ability to remove both solid and gelatinous particles
  • Low cost
  • Singed/glaze finish on Polyester and Polypropylene reduces fiber shedding


Felt Bag Seam Styles



  • Industry standard make
  • 5 line system when sewing
  • Strong construction for that heavy dirt holding capacity


  • No needle holes
  • No thread contamination
  • Precision bonded cutting of the fabric edges
  • Maintain same efficiency as filter media

Options for Rings:

Steel Ring, Plastic Ring, Drawstring.

Mesh Bags

(Nylon Filter Bag w/ Snap Ring shown. Part #21WU27
Benefits of Mesh

  • Mesh bag materials meet FDA regulations
  • Silicone-free construction
  • High flow/low pressure media
  • Wide chemical compatibility
  • Economical removal of contaminants
  • Temp ratings to 350F

*Mesh bags only come in one seam style: Sewn*

Available Rings

Steel Ring

  • Galvanized steel (stainless steel option)
  • Sewn into the top of the bag
  • Cotton handle is standard with steel ring configuration
  • Designed to gasket as well as support and secure filter bag when placed into housing

Plastic Ring

  • Molded plastic with built-in handle makes installation and disposal faster, cleaner and less expensive
  • Just drop into housing and push down
  • Smooth plastic designs prevent build-up of contaminants around header
  • Collar is sewn or welded into place to ensure that plastic media remain firmly intact

Draw String

  • Adjustable top diameter to make easy tie on to piping
  • Great for gravity feed applications
  • Easy disposal
  • Economical filter applications

How to Build a Filter Bag Part Number

Click a component on the example part number below to see its options
PE   25   P   2   S

Refers to:
Construction/Media Type
Felts Polyester : PE
Polypropelene : POG
Nomex : HT


Monofilament Mesh

Polypropelene : POMO
Nylon : NMO


Polyester : PEMU


Refers to:
Micron Rating
Felts : 1-200

Mesh : 1-1500


Refers to:
Cover or Jacket
Plain (No Cover) : P


Refers to:
Bag Dimensions
Symbols Diam. Lengths
1 7.06 16.5
2 7.06 32.0
3 4.12 8.0
4 4.12 14.0


Refers to:
Bag or Collar Style
Standard Steel Ring : S
Stainless Steel Ring : SS
Drawstring : -T
Plastic Sure Seal Ring : P

Check out our line of Liquid Filter Bags today. If you don’t see a standard bag that fits your needs, custom designs are always available. Contact us for help!