Eaton Industrial Polypropylene Felt Filter Bags

A Reliable Solution for Industrial Liquid Filtration

Eaton Industrial Polypropylene Felt Filter Bags represent a standard of excellence in process filtration. Designed to handle a wide range of industrial applications, these bags utilize advanced needlefelt extrusion and manufacturing techniques to deliver consistent performance, high dirt-holding capacity, and cost-effective filtration. Whether for water treatment, chemical processing, or parts cleaning, Eaton’s polypropylene bags provide the durability and chemical resistance required for demanding environments.

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Key Features and Construction

Polypropylene (PP) needlefelt is a depth filtration media. Unlike surface filters (meshes), needlefelt creates a three-dimensional matrix that traps particles deep within the fabric, allowing for significantly higher contaminant retention before a bag change is necessary. Eaton optimizes this material with several structural advantages:

• 100% Pure Polypropylene: The media is silicone-free and constructed from pure synthetic fibers, ensuring broad chemical compatibility with acids, alkalis, and many solvents.
• Welded or Sewn Construction: Eaton offers bags with fully welded seams (using varying technologies like Sentinel® seals) to eliminate needle holes where bypass can occur, ensuring that no unfiltered liquid slips through the bag.
• Surface Treatment: The exterior surface of the felt is typically singed or glazed. This thermal treatment bonds loose fibers, preventing fiber migration into the clean filtrate—a critical feature for high-purity coatings and finishings.
• Versatile Micron Ratings: Available in a comprehensive range of retention ratings, allowing users to target specific particle sizes from coarse to fine filtration.

Technical Specifications

Understanding the operational limits of your filter bags is crucial for system safety and efficiency. The table below outlines the standard specifications for Eaton Polypropylene Felt bags.

Specification	Details
Filter Media	Polypropylene Needlefelt (Felt)
Micron Ratings (Nominal)	1, 5, 10, 25, 50, 100, 200 µm
Maximum Operating Temperature	Approx. 194°F (90°C)
Chemical Resistance	Excellent resistance to acids and alkalis; good resistance to organic solvents.
Ring/Seal Materials	Polypropylene (Sentinel® collar), Galvanized Steel, or Stainless Steel Snap-Rings.
Standard Sizes	Size 01 (7″ x 17″) Size 02 (7″ x 32″) Size 03 (4″ x 9″) Size 04 (4″ x 15″)

Common Applications

Due to the chemical robustness of polypropylene, these filter bags are utilized across a diverse spectrum of industries. They serve as excellent pre-filters for membrane systems (such as RO) or as final filters for bulk fluid transfer.

Industry	Typical Usage
Water Treatment	Pre-filtration for Reverse Osmosis (RO), removal of silt, sand, and algae from well water or seawater.
Chemical Processing	Filtration of acids, alkalis, solvents, and amine solutions where chemical compatibility is paramount.
Automotive & Paint	Removing agglomerates from e-coats, primers, and topcoats; filtration of cleaning fluids and degreasers.
Food & Beverage	Clarification of process water, edible oils, and removal of solids from corn syrup or liquid sugar (using FDA-compliant grades).
Metal Working	Filtration of hydraulic oils, lubricating fluids, and coolants to extend tool life and improve finish quality.

Why Choose Eaton?

Eaton is a globally recognized leader in filtration technology. Their manufacturing process ensures strictly controlled porosity and media density. This consistency translates to predictable performance in your facility, allowing maintenance teams to schedule bag change-outs effectively rather than reacting to unexpected pressure spikes or bypass events.

Whether you are using the cost-effective SNAP-RING filter bags or the advanced SENTINEL fully welded bags for bypass-free filtration, Eaton’s polypropylene range offers a solution for every budget and technical requirement.