SFFILTECH supplies replacement dust collector filter bags for baghouses, pulse jet collectors, reverse air systems, and industrial dust filtration equipment. This page helps buyers review filter bag options, confirm replacement details, and prepare quotation information before ordering.
A dust collector filter bag should not be selected only by material name or temperature. The correct bag depends on dust type, normal and peak temperature, moisture, acid gas or alkali exposure, cleaning method, cage fit, tube sheet condition, and the old bag failure pattern. Common media options include polyester, aramid, PPS, PTFE or PTFE membrane, P84, and fiberglass-based media, depending on the operating conditions.
For replacement projects, small construction details can affect installation and sealing. Please confirm bag diameter or flat width, total length, top style, bottom style, snap band or ring details, seam type, surface treatment if required, quantity, delivery country, and operating data. Useful operating information includes temperature range, dust abrasiveness, dust stickiness, moisture or condensation risk, chemical exposure, cleaning pressure, and current failure location.
Photos help reduce quotation mistakes. Send a full bag photo, top close-up, bottom close-up, length photo, diameter or flat-width photo with a measuring tape, cage photo if a cage is used, tube sheet or venturi details if available, and damaged areas from the failed bag. If different collectors use similar-looking bags, separate the photos and dimensions by equipment position.
If the current material is uncertain, send the old bag sample, previous order record, equipment nameplate, or any available drawing. If the bags failed early, photos of the failure area and surrounding installation condition can help review whether the issue may relate to media selection, cage fit, cleaning settings, moisture, or dust behavior.
If the size is uncertain, review the filter bag measurement guide. For broader material and construction options, see the industrial filter bags page. For a complete quotation checklist, use the replacement filter bag RFQ guide.
Application requirements should be confirmed before quotation. Lead time depends on product specification, order quantity, and material availability.
The polyester filter bag is made of 100% filament polyester fiber raw material. According to the characteristics of the working conditions and usage requirements, different production equipment and manufacturing processes are used. Various denier polyester fibers are mixed through needling, and then subjected to singeing, heat setting, and rolling to produce polyester felt with high filtration performance. Afterwards, a conventional polyester filter bag is made by sewing with polyester felt.
Glass fiber woven felt bag is a kind of filter material with reasonable structure and good performance. This filter bag not only has the advantages of glass fiber fabric, such as high temperature resistance, corrosion resistance, dimensional stability, minimal elongation and shrinkage, and high strength, but also has a single fiber, three-dimensional micro porous structure, and high porosity. Compared with other high-temperature resistant chemical fiber felt filter bags, it has the special advantages of low price and higher temperature resistance, but its running resistance is higher than that of ordinary chemical fiber high-temperature filter materials.
Fiber shape: Synthesized from biphthalic anhydride and p-phenylenediamine, yellow, with a trilobal fiber cross-section. Under the premise of the same weight and linear density, such a structure greatly increases the surface area of the fiber, which is more beneficial for intercepting dust during the filtration process.
It is obtained from polyimide fiber by needle punching, and its characteristics are remarkable because of its own fiber fineness.
P84 filter material: P84 material is a composite fiber fabric product, mainly composed of polyethylene terephthalate (P84) and polyamide (PA). According to the characteristics of working conditions and usage requirements, different production equipment and manufacturing processes are adopted. Mix P84 fibers with different denier numbers through acupuncture, and then undergo singeing, heat setting, and rolling to produce aramid felt with high filtration performance. Then, sew a traditional P84 filter bag with P84 felt.
The PPS filter bag is made of polyphenylene sulfide raw material. Polyphenylene sulfide, a high-performance thermoplastic engineering plastic, is produced using different production equipment and manufacturing processes based on the characteristics of working conditions and usage requirements. High functional organic polyphenylene sulfide fibers are mixed through needle punching, and then subjected to singeing, heat setting, and rolling to produce PPS needle punched felt with high filtration performance. Then, sew a traditional PPS filter bag using PPS needle felt.
Acrylic needle punched felt filter bag, chemically named acrylonitrile, is made from acrylic needle punched felt produced by needle punching method. Acrylonitrile fiber is produced using different production equipment and manufacturing processes according to the characteristics of working conditions and usage requirements. After special hydrophobic treatment, it is then singed, heat set, and rolled to produce acrylic needle felt with high filtration performance. Then, sew a traditional PPS filter bag with acrylic needle felt.
PP needle punched felt filter bag, made from PP needle punched felt produced by needle punching method. PP fibers are produced using different production equipment and manufacturing processes based on the characteristics of working conditions and usage requirements. After special hydrophobic treatment, PP needle felt with high filtration performance is produced through singeing, heat setting, and rolling. Then, sew a traditional PP filter bag with PP needle felt.
PTFE needle punched felt filter bag, also known as Teflon, is made of PTFE needle punched felt produced by needle punching method. Polytetrafluoroethylene fibers are produced using different production equipment and manufacturing processes based on the characteristics of working conditions and usage requirements. Through processes such as singeing, heat setting, and rolling, polytetrafluoroethylene needle felt with high filtration performance is produced. Then, sew a traditional PTFE filter bag using polytetrafluoroethylene needle felt.
