Quick Take
Choosing the right piece of filtration separation equipment can be confusing because the category spans components, housings, and consumables. Before you settle on a product, you need to know whether you are replacing a filter element, building a bag filter station, or restocking the sock bags that go inside one. This comparison looks at four options with very different roles: a Fluitek replacement element, a TECHTONGDA stainless steel bag filter housing, and two Duda Energy filter sock bag lots.
If your goal is a simple part replacement, the Fluitek FSN-0108-02 is the low-priced option. If you need the housing that holds a filter bag, the TECHTONGDA 1# bag filter is the purpose-built choice. If you already have a housing and need bags in bulk, Duda Energy's sewn and welded sock bags give you two construction choices at similar price points.
Listed Price at a Glance
| Option | Listed Price | Price Bar |
|---|---|---|
| NEW Fluitek FSN-0108-02 Industrial Filter Element | USD 39.99 | |
| TECHTONGDA 1# Bag Industrial Filter 304 Stainless Steel 2\" NPT In/Out 120 PSI | USD 528.24 | |
| Welded Industrial Filter Sock Bags Plastic Ring Flange Water Liquid Oil WVO Fuel | USD 327.83 | |
| Sewn Industrial Filter Sock Bags Water Liquid Biodiesel WVO Oil Dust Fuel Diesel | USD 316.00 |
Decision Matrix
| Option | Best For | Key Consideration |
|---|---|---|
| Fluitek FSN-0108-02 | Replacing a specific filter element | Open-box condition; model-specific fit |
| TECHTONGDA 1# Bag Filter | Building a bag filtration setup | Highest listed price; housing only, bags sold separately |
| Duda Energy Welded Sock Bags | Filtration where seam contamination matters | Bulk 50-bag lot; Size#4 compatibility |
| Duda Energy Sewn Sock Bags | General liquid filtration in bulk | Lower listed price than welded for same size |
Product Notes
NEW Fluitek FSN-0108-02 Industrial Filter Element
The Fluitek FSN-0108-02 is the most economical entry in this set at USD 39.99, and it comes with a specific model number and manufacturer name. Because it is a filter element rather than a housing, it fits into an existing filtration separation setup that accepts this FSN-0108-02 part. The open-box condition is worth weighing: the product is described as new, but the packaging may show wear. If you are looking for a low-priced spare element, this is the option to start with.
TECHTONGDA 1# Bag Industrial Filter 304 Stainless Steel 2\" NPT In/Out 120 PSI
TECHTONGDA's 1# bag filter is the only complete bag filter housing in this group, listed at USD 528.24. It is built with 304 stainless steel, a stainless steel strainer basket, and a 2-inch NPT inlet/outlet rated at 120 PSI, which makes it suitable for remediation and industrial filtration needs. The trade-off is the price: it is the most expensive item here, and it is a housing, so you will still need 1# filter bags to operate it. If you are starting a bag filtration setup rather than replacing a worn part, this is the structural foundation to build around.
Welded Industrial Filter Sock Bags Plastic Ring Flange Water Liquid Oil WVO Fuel
Duda Energy's welded filter sock bags come as a lot of 50 in Size #4, with a 4-inch by 14-inch diameter-to-length footprint and a 0.5-micron rating, priced at USD 327.83. The welded construction eliminates needle holes and thread contamination, and the plastic ring flange makes removal from a bag housing straightforward. The precision-bonded edges also reduce fiber migration into the working fluid. The main constraint is that these are consumable bags for a compatible housing, and the Size #4 dimension must match your basket, so confirm your housing's bag size before stocking up.
Sewn Industrial Filter Sock Bags Water Liquid Biodiesel WVO Oil Dust Fuel Diesel
For the same Size #4 bag, Duda Energy's sewn option lists at USD 316.00, which is under the welded set's price. These sewn bags are meant for filtering many liquids and come in a 50-bag lot with the same 0.5-micron rating. If you do not need the fiber-free seam benefits of a welded bag, the sewn version gives you comparable dimensions at a lower listed price. The sewn seams are the practical difference, so for applications where needle holes or thread contamination are a concern, the welded alternative is the safer path.
Final Recommendation by Use Case
Choose the TECHTONGDA bag filter housing if you are building a filtration separation system and need a stainless steel housing with a 2-inch NPT connection. Go with the Fluitek FSN-0108-02 when your system already takes that model and you want a replacement element at the lowest listed price here. Pick the Duda Energy welded sock bags when you need a 50-bag lot and want to avoid needle-hole contamination. Otherwise, the sewn sock bags are the more economical way to stock the same Size #4 filter media.
