Mesh Filter Bags

Parent category: Liquid Filter Bags → Mesh Filter Bags

At-a-Glance Comparison (Mesh Families)

Family	Material	Construction	Micron Range	Typical Max Temp	Best For
NMO	Nylon Monofilament	Single-fiber square weave	1–1500 µm	~275°F	Most precise surface cut; polishing and classification
NMU	Nylon Multifilament	Thread bundles (multi-strand)	25–1500 µm	~275°F	Higher dirt-holding vs monofilament; economical general use
PEMU	Polyester Multifilament	Thread bundles (multi-strand)	100–1500 µm	~275°F	Durable, stable polyester mesh; coatings and chemicals
POMO	Polypropylene Monofilament	Single-fiber woven	100–800 µm	~180°F	Excellent chemical resistance; high-flow straining

Food contact: Polyester and polypropylene options are available that comply with CFR21 food-contact regulations. Silicone-free: All mesh families are available silicone-free. Need finer or specialty microns? Contact CFS for non-listed ratings and custom builds.

Micron Coverage by Mesh Family

Select your target particle size and choose the mesh family that offers the micron rating and construction best suited to your process. Monofilament provides the tightest, most repeatable openings; multifilament trades some precision for higher dirt-holding.

Availability Matrix

Micron (µm)	NMO Nylon Mono	NMU Nylon Multi	PEMU Polyester Multi	POMO PP Mono
1–10	•
25–75	•	•
100–150	•	•	•	•
200–300	•	•	•	•
400–600	•	•	•	•
800	•	•	•	•
1000–1500	•	•	•

Standard Bag Sizes and Ring / Flange Styles

Sizes and Dimensions

Bag Size	Diameter	Length	Notes
P1	7″	16″	Most common
P2	7″	32″	Double area vs P1 → lower ΔP
P3	4″	8″	Compact
P4	4″	14″	Compact

Ring / Flange Options

Code	Description	Construction	Typical Use
SH	Galvanized Steel Ring	Sewn	General purpose
SS	Stainless Steel Ring	Sewn	Corrosion resistance / food & chemical
P	P Flange (collar)	Sewn	Positive seal for compatible housings
F	F Flange (collar)	Sewn	Alternate collar profile / sealing
DS	Draw String	Sewn	Open-top vessels, low pressure

Tip: Choose SS rings for aggressive chemistries or food contact. Use collar styles (P/F) for housings that require a positive seat/seal.

How to Choose Your Mesh Bag

Step-by-Step

1. Define objective: Tight, repeatable cut → Monofilament (NMO, POMO). Higher capacity at similar µm → Multifilament (NMU, PEMU).
2. Pick micron: Start with spec or lab test; reduce µm if target passes, increase if differential pressure rises too fast.
3. Select size: P2 offers longer runs and lower ΔP vs P1; P3/P4 for compact spaces.
4. Ring vs collar: Choose based on housing style and seal preference; upgrade to SS where corrosion or compliance matters.
5. Temperature and chemistry: Nylon/polyester service to ~275°F; polypropylene to ~180°F; confirm compatibility for your fluid.

Common Application Matches

Application	Recommended Family	Typical Microns	Notes
Water polishing / coolant filtration	NMO or NMU	25–300 µm	NMO for precise cut; NMU for added dirt capacity
Paints / inks / coatings	NMO or PEMU	50–400 µm	Consistent openings; polyester stable in many systems
Food & beverage (non-fiber shedding)	NMO or POMO	100–400 µm	Contact CFS for compliant constructions
Chemical processing	NMO / PEMU / POMO	50–800 µm	Match material to chemistry and temperature limits
Bulk solids removal / straining	POMO or NMU	200–800 µm	High flow with good service life

Shop by Mesh Family

• Nylon Monofilament (NMO) — Highest precision with square-weave openings, 1–1500 µm.
• Nylon Multifilament (NMU) — Economical with higher dirt capacity, 25–1500 µm.
• Polyester Multifilament (PEMU) — Durable polyester mesh, 100–1500 µm.
• Polypropylene Monofilament (POMO) — Chemically resistant monofilament, 100–800 µm.

Need help selecting a mesh family, micron, or ring/flange style? Talk to a CFS Filtration Specialist.