Filter socks and bags, 1 to 800 micron
Polyester felt and nylon mesh for aquarium sumps, coolant tanks, plating lines and hatcheries. Standard sizes are priced online. Anything else is quoted within one working day.
Pick a micron rating
In the shop Made to order Scale in microns (µm). 1,000 µm = 1 mm. Particle sizes are approximate.
Best sellers
See the full range| Product | Material | Micron | Fitting | Length | Each | Buy |
|---|---|---|---|---|---|---|
 4" inch Ring Nylon Mesh Short Filter Sock (50 Microns)
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Nylon Mesh | 50 | 4" Ring | 10.5" | £4.99 ex VAT£5.99 inc VAT | |
 7" inch Ring Nylon Mesh Long Filter Sock (200 Microns)
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Nylon Mesh | 200 | 7" Ring | 15" | £7.08 ex VAT£8.49 inc VAT | |
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7" inch Ring Nylon Mesh Long Filter Sock (100 Microns)
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Nylon Mesh | 100 | 7" Ring | 15" | £7.08 ex VAT£8.49 inc VAT | |
 4" inch Ring Nylon Mesh Long Filter Sock (50 Microns)
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Nylon Mesh | 50 | 4" Ring | 15" | £4.58 ex VAT£5.49 inc VAT | |
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4" inch Ring Nylon Mesh Long Filter Sock (200 Microns)
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Nylon Mesh | 200 | 4" Ring | 15" | £4.16 ex VAT£4.99 inc VAT | |
 AFS Filter Sock Nylon Mesh 100 Microns (Fits Red Sea Reefer)
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Nylon Mesh | 100 | 4" Ring | 10.5" | £4.13 ex VAT£4.95 inc VAT |
The price drops when you buy 3 or more of the same sock, up to 10% off at 20. It is worked out in your basket.
Felt or mesh?
Read the micron guide
 Polyester felt
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 Nylon mesh
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|---|---|---|
| How it filters | Thick needle felt traps particles through its depth, so it holds a lot of dirt and polishes the liquid. | Woven monofilament with an exact opening stops everything above its rating at the surface. |
| Ratings | Down to 1 micron. The choice for fine work. | Up to 800 micron. Sharp cut-off, fast flow. |
| Cleaning | Rinse a few times, then replace. Treat it as a consumable. | Rinses clean and goes straight back in. Lasts for years. |
| Pick it for | Fine solids, polishing, coolant fines, plating baths. | Coarse debris, high flow, sumps, hatcheries, ponds. |
Shop by fitting
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4 inch ring socks
Most sumps and small tanks. 10.5 and 15 inch long.
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7 inch ring socks
Larger sumps and higher flow. 10.5 and 15 inch long.
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11 inch drawstring bags
Ponds, pipes and open outlets. 15 and 30 inch long.
- Bags for filter housings Sizes 1 to 4, sewn or welded, PP, felt, mesh and Nomex. Made to order and quoted within one working day. Click to quote
What are you filtering?
- Laboratories and research Sample sieving, cutting and grinding coolant tanks, precise-aperture nylon mesh.
- Metalworking coolant and parts washers Swarf and fines out of coolant sumps, wash tanks and vibratory finishing water.
- Plating and anodising Anode bags and tank filtration, sewn to the size of your baskets.
- Aquaculture and public aquaria Hatchery, live-feed and life-support socks from 1 to 800 micron.
- Water treatment and process water Boreholes, rainwater, cooling water and closed-loop flushing.
- Used cooking oil and biodiesel Staged filtration from coarse mesh down to fine felt.
- Aquarium and pond Sump socks for 4 inch and 7 inch holders, Red Sea Reefer socks and pond bags.
Custom socks and bags
Different diameter, longer body, drawstring top, another material: tell us what you need and we price it.
- Send the spec. Material, micron rating, size and quantity. A photo of the old bag is enough if you don’t have a drawing.
- Get a price within one working day, with the delivery date.
- Accept and pay online, or reply with a purchase order.
Buying for a business?
Every filter sock shows its price at quantity, ex VAT or inc VAT. Use the switch at the top of the page. Resellers and regular buyers can apply for a trade account with its own price list and VAT invoices.
Kept separately from the filter range: shipping heat packs, coral glue and aquarium supplies.