Filter Bag

Industrial Filter Bags for Dust Collection, Liquid Filtration, and Replacement Projects

SFFILTECH supports industrial buyers who need filter bags for new equipment, maintenance replacement, OEM matching, and application-specific filtration projects. This page covers the main filter bag families used by plant maintenance teams, procurement managers, environmental engineers, process engineers, dust collector OEMs, and distributors.

The correct filter bag depends on the filtration system, process material, operating temperature, dust or liquid characteristics, cleaning method, and installation details. Before quotation, buyers should confirm the bag size, top and bottom construction, material, finish, quantity, working conditions, and any certificate or documentation requirements.

Request a Filter Bag Quote: Send diameter, length, material, top style, bottom style, quantity, operating conditions, and photos or drawings for review.

Filter Bag Product Categories

SFFILTECH filter bags can be grouped by filtration method, equipment type, material, and replacement requirement.

• Dust collector filter bags: fabric filter bags used in pulse jet, reverse air, shaker, and other dust collection systems.
• Baghouse filter bags: replacement bags used inside industrial baghouses for cement, asphalt, power, steel, chemical, mining, and other dust-producing processes.
• Liquid filter bags: filter bags and socks used with bag filter housings for water, wastewater, chemicals, coatings, oils, water treatment, chemical processing, coatings, oils, and selected process liquids.
• Custom filter bags: bags made according to buyer drawings, samples, photos, dimensions, top style, bottom style, media, finish, and equipment fit.
• Replacement filter bags: bags selected to match an existing dust collector, baghouse, filter cage, or bag filter housing.

Dust Collector and Baghouse Filter Bags

Dust collector filter bags help separate dust from gas streams in industrial dust collection systems. They are commonly selected by material, temperature range, dust type, gas chemistry, moisture exposure, cleaning method, bag size, and cage fit. For baghouse replacement, the top construction and bottom construction are as important as the media itself.

Common details for dust collector filter bag quotation include diameter, length, snap band or ring style, cuff design, bottom type, seam construction, cage dimensions, venturi requirement, cleaning method, and working temperature. Buyers should also describe the dust source, such as cement kiln dust, asphalt dust, steel or foundry dust, chemical powder, mining dust, or food process dust.

For dust collector replacement projects, use the industry-specific filter bag RFQ checklist to prepare operating conditions, size details, photos, and quantity before quotation.

Liquid Filter Bags

Liquid filter bags are used in bag filter housings to remove particles from process liquids. They may use felt, mesh, or specialty media depending on the fluid, target particle size, solids loading, viscosity, flow condition, and housing design. Liquid filter bag RFQs should include bag size, micron rating, ring or flange type, material, seam method, liquid type, temperature, and compatibility requirements; buyers can review liquid filter bag quotation details before sending the inquiry.

Custom and Replacement Filter Bags

Custom filter bags can be reviewed from drawings, old samples, equipment photos, or detailed measurements. For replacement dust collector bags, matching the bag to the cage, tube sheet, and cleaning system helps reduce installation problems. For liquid bags, matching the bag size, ring style, and housing seal helps reduce bypass risk.

Filter Bag Specification Overview

Filter Bag Material Selection Guide

Material selection should be confirmed against actual operating temperature, gas or liquid chemistry, moisture, dust abrasiveness, cleaning method, and equipment design. The notes below are general selection references, not performance guarantees.

Construction and Finish Options

Application and Industry Examples

Filter bags are selected differently for each plant and process. The same material may behave differently depending on dust load, gas composition, humidity, liquid chemistry, cleaning method, and installation quality.

• Cement plant: dust collector and baghouse bags for kiln, mill, and material handling dust systems.
• Asphalt plant: filter bags reviewed according to temperature, dust, oil, and cleaning conditions.
• Power plant: selected dust filtration applications where flue gas conditions must be reviewed carefully.
• Steel and foundry: filter bags and cages selected for dust type, temperature, abrasion, and cleaning method.
• Chemical plant: dust or liquid filtration bags selected according to media compatibility and process conditions.
• Wastewater: liquid filter bags for particle removal in selected process and treatment lines.
• Paint and coatings: liquid filter bags selected by micron rating, compatibility, and solids loading.
• Mining: dust collection bags reviewed for dust abrasiveness, loading, and system cleaning method.

Replacement and Custom Order Review

For replacement projects, SFFILTECH can review photos, drawings, samples, and measurements before quotation. This helps confirm whether the request is for a dust collector bag, liquid filter bag, filter sleeve, baghouse bag, or a custom construction.

If the existing filter bag failed early or caused high pressure drop, buyers should also share operating conditions, dust or liquid details, cleaning method, and any visible damage photos. These details help the technical review before material and construction suggestions are made.

Filter Bag RFQ Checklist

For a faster and more accurate quotation, send as many of the following details as possible:

• Bag diameter.
• Bag length.
• Flat width if diameter is unknown.
• Top construction, such as snap band, ring top, flange, cuff, or raw edge.
• Bottom construction, such as disc bottom, reinforced bottom, or special shape.
• Material preference or current material.
• Finish requirement, such as singed, glazed, PTFE membrane, anti-static, or oil and water repellent.
• Dust type or liquid type.
• Micron rating if it is a liquid filter bag.
• Operating temperature.
• Peak temperature.
• Cleaning method for dust collector bags.
• Quantity.
• Existing dust collector or housing brand/model.
• Filter cage dimensions if available.
• Required certificates or documents, if applicable.
• Delivery country.
• Target delivery date.
• Photo, drawing, or sample attachment option.

RFQ note: If you are not sure about the material or construction, send photos of the old bag, top, bottom, cage, tube sheet, or housing. A sample or drawing can help reduce quotation uncertainty.

Request a Filter Bag Quote: Send diameter, length, material, top style, bottom style, quantity, operating conditions, and photos or drawings for review.

Filter Bag FAQ

What is an industrial filter bag?

An industrial filter bag is a replaceable filtration element used to capture dust in dust collectors or particles in liquid filtration systems. It is selected according to equipment type, media, construction, size, and operating conditions.

What is the difference between a dust collector filter bag and a liquid filter bag?

A dust collector filter bag works in a gas stream inside a dust collector or baghouse. A liquid filter bag works inside a bag filter housing to remove particles from liquids. Their media, construction, sealing method, and RFQ details are different.

How do I choose the right filter bag material?

Start with the process conditions: dust or liquid type, temperature, chemical exposure, moisture, particle size, cleaning method, and equipment design. A supplier may ask for photos, drawings, samples, or operating data before recommending a material.

What materials are available for high-temperature filter bags?

High-temperature dust filtration may use aramid/Nomex, PPS, PTFE, fiberglass, P84, or blended media depending on the application. The final material should be confirmed against operating temperature, peak temperature, gas chemistry, moisture, and dust characteristics.

Can you make custom-size filter bags?

Custom-size filter bags can be reviewed from drawings, samples, photos, or measurements. Required details usually include diameter, length, top construction, bottom construction, material, finish, and quantity.

What information do you need for a filter bag quote?

Useful RFQ information includes bag dimensions, top and bottom construction, material, finish, dust or liquid type, temperature, cleaning method, quantity, equipment model, delivery country, and photos or drawings.

How do I measure a dust collector filter bag?

Measure the bag diameter, length, top style, bottom style, and any sealing or ring details. If the old bag is damaged, also provide cage diameter, cage length, tube sheet hole size, and photos of the installation area.

What is the difference between polyester, PPS, PTFE, and aramid filter bags?

Polyester is often reviewed for general dry dust conditions. PPS, PTFE, and aramid are reviewed for more demanding temperature or chemical conditions. The best choice depends on the full process environment, not the material name alone.

What filter bag finish should I choose for sticky or moist dust?

Sticky or moist dust may require a surface finish such as singed, glazed, PTFE membrane, or oil and water repellent treatment. The choice depends on dust behavior, moisture, gas temperature, and the cleaning method.

Can SFFILTECH manufacture replacement filter bags for OEM dust collectors?

Replacement may be possible when the dimensions, construction, material, sealing method, and operating requirements are clearly confirmed. Send drawings, samples, model information, and photos before ordering replacement bags.

Do filter bags need matching filter cages?

Dust collector filter bags often need matching filter cages. Cage diameter, length, wire count, ring spacing, venturi, and surface treatment can affect bag fit and installation.

What causes filter bag failure or high pressure drop?

Possible causes include wrong material selection, moisture, high temperature, chemical attack, abrasion, poor cage fit, installation damage, dust overload, cleaning problems, or process changes. A review should include bag photos and operating details.

Technical Review and Order Documentation

SFFILTECH reviews filter bag inquiries based on application conditions, equipment fit, material selection, construction requirements, and replacement dimensions. Buyers may send drawings, samples, photos, or operating data for technical review before quotation.

Material specifications, inspection photos, packing details, and order documentation can be provided according to project requirements. Documentation requirements can be reviewed before quotation.

Page Review Information

Prepared by: SFFILTECH Technical Content Team. Last updated: June 2026.