FMS Filter Bag Quotation Guide: Temperature, Size, Snap Ring and Baghouse Details

FMS filter bag for high temperature baghouse dust collector applications.

When buyers request an FMS filter bag or FMS filter sock quotation, the price depends on more than diameter and length. Working temperature, dust condition, snap ring design, surface treatment and installation details all affect the correct material choice. A clear RFQ helps the supplier recommend a stable baghouse filter bag and avoid wrong samples, wrong collars or poor installation fit.

1. Confirm the working temperature

FMS filter bags are commonly selected for high temperature dust collection. Before quotation, confirm the normal working temperature and short peak temperature. If the gas temperature is close to the material limit, the filter bag may need a different fiber blend, surface finish or protective treatment. Temperature information is especially important for cement plants, steel plants, boilers, asphalt mixing, drying systems and waste treatment processes.

2. Measure the filter bag size correctly

The basic size should include bag diameter, bag length and quantity. For example, a quotation request may describe the bag as 120 mm diameter and 4000 mm length. The measuring method should be consistent with the actual baghouse design. If an old bag is available, measure the flat width, circumference, total length, bottom type and top fixing method. Photos are also useful.

3. Describe the snap ring and top construction

Many dust collector filter bags use a snap band or snap ring at the top. The snap ring width, thickness, felt overlap, groove fit and sealing requirement should match the tube sheet. A small difference may cause leakage or installation problems. When possible, send a close-up photo of the old snap ring and tube sheet hole.

4. Select material and surface treatment

FMS filter media may use fiberglass and high temperature fiber blends, with different finishes according to dust type and emission requirement. Common quotation questions include whether the bag needs PTFE membrane, PTFE impregnation, oil and water repellent treatment, anti-static performance or special sewing thread. The best option depends on temperature, moisture, acid or alkali condition and dust abrasiveness.

5. Share baghouse and process information

For better recommendation, provide the dust collector model, cleaning method, air volume, dust concentration and application industry. Pulse jet baghouses and reverse air systems may require different bag construction. If cages are used, cage diameter and vertical wire condition should also be checked. A damaged cage can shorten the life of a new filter bag.

Quotation checklist for FMS filter bags

Related SFFILTECH products and guides

For high temperature dust filtration, see our 200 to 300 Centigrade Mix Cloth FMS Filter Bag. For more dust collection options, visit Dust Filtration and Filter Bag. If you are preparing a replacement inquiry, the guide What Information Should You Send Before Ordering Replacement Filter Bags? may help you collect the right data.

To request a quotation, send SFFILTECH the filter bag size, quantity, working temperature, top and bottom photos, cage or tube sheet photos, and delivery destination. Our team can help match an FMS filter bag or other dust collector filter bag for your operating condition.