When you're buying for a liquid filtration or separation task, the first decision isn't just which micron rating you need-it's whether you need filter media or the vessel that holds it. The two products here sit on opposite sides of that line: a single 1-micron filter sock and a used stainless steel bag filter housing.
Quick verdict: If you already have a bag filter housing and just need fine filter socks to run in it, grab the Industrial filter bag at $19.99. If you're building or replacing the housing itself and need a durable, pressure-rated vessel for process liquids, the Filtra Systems FSC housing at $550 is the investment to make.
| Product | Price | Condition | What it is | Key spec |
|---|---|---|---|---|
| Industrial filter bag | $19.99 | New | Filter sock media | 1 micron, 18" length |
| Filtra Systems FSC housing | $550.00 | Used | Bag filter housing | 304 stainless steel, 150 PSI |
Where each wins. The filter bag wins on price and fine filtration. At a 1-micron rating, it's meant for extra-fine particle removal from water, ethanol, methanol, and other compatible liquids. It also comes as a single unit, so you can buy exactly what you need without committing to a big system. The housing wins on capability and longevity. The Filtra Systems FSC is a 304 stainless steel vessel with a single basket support, rated for 150 PSI and temperatures up to 210°F. It's meant for process liquids like water, coolant, and oil, and it gives you a permanent platform to run filter bags.
Product notes.
Industrial filter bag, 1 Micron Filter Sock Bags, Water Liquid Oil Dust Fuel-1um
This is the consumable half of a bag filter setup. The Real Ganj Father Lab Supply markets it as a USA-made lab supply, and the bag uses welded and sewn polyethylene with a round bottom and a 7-inch non-corrosive metal ring. That 1-micron rating makes it a solid choice when you need fine filtration from a liquid stream. One obvious reason to choose it: it's under $20, so replacing it on a schedule is a low-stakes decision. The limitation is that it's just one sock. If your housing holds multiple bags or you need to filter a high flow rate, you'll need to purchase several, and the cost adds up quickly.
Filtra Systems FSC Bag Filter Housing 304 Stainless Steel 150 PSI Industrial
This is the system piece. Filtra Systems builds bag filter housings for process liquids, and this unit is constructed from 304 stainless steel with a max working pressure of 150 PSI, a max temperature of 210°F, and a max differential pressure of 35 PSI. It comes with a single basket for bag support. The clear reason to choose this housing is durability and pressure rating-if you need to filter water, coolant, or oil in an industrial line, this gives you a metal vessel rated for real pressures. The limitation is that it's a used unit, and it's the housing, not the filter media. You still need filter bags to run in it, so plan for the consumable cost on top of the housing.
Final choice by use case. If you're replacing a sock in an existing bag filter housing, or you only need a spare filter element, the 1-micron bag is the straightforward buy. If you're setting up a new filtration loop or upgrading from a cartridge-style unit, the Filtra Systems housing is the right foundation-just remember to budget a filter bag to run inside it.
