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Uniseals in the UK

We sell DuPont Uniseals in the UK through our Uniseal Shop site, a fantastic product that speaks for itself and takes the place of bulkhead tank connectors. The Uniseal Shop sells only two products, the DuPont Alcryn Uniseal and Flexseal EPDM rubber pipe connectors. The Uniseal is a pipe to tank seal, and by importing in bulk are able to  keep the cost of Uniseals down to an affordable level in the UK and the EU. Stock sizes and quantities of Uniseals have been improved again and for 2020 every size up to 6" is available. So if you are looking for cheap Uniseals then you have come to the right place.

If you have a question you would like to ask about Uniseal pipe grommets then please do not hesitate to contact The Uniseal Shop. We have a Uniseal FAQ's page here which would probably answer your question.

Buy 3/16 inch Uniseal Image

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3/16" inch Uniseal U018
Tank connectors for Hydroponics Aquaponics. Excellent as a Hydroponic Grommet.

Uniseals Save
1 Uniseal £0.99
5 Uniseals £4.49 9.3%
10 Uniseals £7.99 19.3%
20 Uniseals £14.99 24.3%
Uniseals and Holesaw Kits
5 & Holesaw Kit £7.29
10 & Holesaw Kit £10.29
20 & Holesaw Kit £17.99

Free Postage in the UK. Target delivery - three days.

Ideal for use with PVC 6 mm OD tubing e.g. airline into vessels. Used with NFT Hydroponic Microtube. Two inserted into the side of a vessel with an interconnecting PVC tube on the outside can be used as a sight glass to determine water level inside the vessel.



Buy 1/4 inch Uniseal Image

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1/4" inch Uniseal U025
Tank connectors for Hydroponics Aquaponics. Excellent as a Hydroponic Grommet.

Uniseals Save
1 Uniseal £2.49
5 Uniseals £9.69 22.2%
10 Uniseals £18.49 25.7%
20 Uniseals £32.49 34.8%
Uniseals and Holesaw Kits
5 & Holesaw Kit £16.99
10 & Holesaw Kit £25.99
20 & Holesaw Kit £40.99

Free Postage in the UK. Target delivery - three days.

Ideal for 8mm PVC tubing.



Buy 5/16 inch Uniseal Image

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5/16" inch Uniseal U0312
Tank connector, bulkhead for Hydroponics, Aquaponics. Excellent as a Hydroponic Grommet.

Uniseals Save
1 Uniseal £3.15
5 Uniseals £12.69 19.4%
10 Uniseals £24.49 22.3%
20 Uniseals £43.99 30.2%
Uniseals and Holesaw Kits
5 & Holesaw Kit £19.99
10 & Holesaw Kit £31.99
20 & Holesaw Kit £52.49

Free Postage in the UK. Target delivery - three days.

Ideal for 10/11 mm reinforced hose, often used as airline around fishponds. The 10/11mm hose has an inside diameter of 8mm which fits standard air pumps. The U0312 Uniseal allows waterproof access into drums, tanks and filters.



Buy 3/8 inch Uniseal Image

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3/8" inch Uniseal U038
Tank connector, bulkhead for Hydroponics, Aquaponics. Excellent as a Hydroponic Grommet.

Uniseals Save
1 Uniseal £3.40
5 Uniseals £14.99 11.8%
10 Uniseals £26.49 22.1%
20 Uniseals £48.99 28.0%
Uniseals and Holesaw Kits
5 & Holesaw Kit £23.49
10 & Holesaw Kit £34.99
20 & Holesaw Kit £58.99

Free Postage in the UK. Target delivery - three days.

Excellent for 3/8" pipework. We sell a number of these for smaller hydroponics set ups.



Buy 1/2 inch Uniseal Image

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1/2" inch Uniseal U050
Tank connector, bulkhead for Hydroponics, Aquaponics, Fish Ponds

Uniseals Save
1 Uniseal £3.90
5 Uniseals £17.49 10.3%
10 Uniseals £29.49 24.4%
20 Uniseals £53.99 30.8%
Uniseals and Holesaw Kits
5 & Holesaw Kit £27.49
10 & Holesaw Kit £39.99
20 & Holesaw Kit £65.99

Free Postage in the UK. Target delivery - three days.

Ideal for 1/2" pressure pipe. Often used in Dutch bucket Hydroponic systems. Can be used to connect a drain pipe to high level plant containers i.e. tall planters from the soil container down to ground level, sometimes inside the planter. I have used this Uniseal to connect 19mm reinforced hose - works perfectly.



Buy 3/4 inch Uniseal Image

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3/4" inch Uniseal U075
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds

Uniseals Save
1 Uniseal £4.40
5 Uniseals £18.49 16.0%
10 Uniseals £32.49 26.2%
20 Uniseals £58.99 33.0%
Uniseals and Holesaw Kits
5 & Holesaw Kit £28.49
10 & Holesaw Kit £42.49
20 & Holesaw Kit £70.99

Free Postage in the UK. Target delivery - three days.

Du Pont 3/4 inch Uniseal. Uniseals are available in standard pipe sizes from 3/16" all the way up to 6". Achieves an excellent seal on 3/4" pressure pipe. Often used in Dutch bucket Hydroponic Systems as hydroponic grommets.



Buy 1 inch Uniseal Image

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1" inch Uniseal U100
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds

Uniseals Save
1 Uniseal £4.90
5 Uniseals £21.49 12.3%
10 Uniseals £36.49 25.5%
20 Uniseals £64.99 33.7%
Uniseals and Holesaw Kits
5 & Holesaw Kit £32.99
10 & Holesaw Kit £47.49
20 & Holesaw Kit £77.99

Free Postage in the UK. Target delivery - three days.

Used in Koi  and fish pond filtration systems. Hydroponics and aquaponics. Achieves an excellent seal  on 1" pressure pipe. Often used in Dutch Bucket Hydroponic Systems. Uniseal tank connectors can be used in most water transportation systems.



Buy 1 1/4 inch Uniseal Image

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1 1/4" inch Uniseal U125
Tank connector, bulkhead for Hydroponics, Aquaponics, Fish Ponds

Uniseals Save
1 Uniseal £4.50
5 Uniseals £22.49 0.0%
10 Uniseals £36.99 17.8%
20 Uniseals £64.99 27.8%
Uniseals and Holesaw Kits
5 & Holesaw Kit £33.99
10 & Holesaw Kit £44.99
20 & Holesaw Kit £77.99

Free Postage in the UK. Target delivery - three days.

Often used in Hydroponics, good for 40mm standard household waste pipe which is thin walled. Best to use a push fit or compression fit pipe. Solvent weld (glued) 40mm household pipe has an Outside Diameter of 43mm which is a tough fit.



Buy 1 1/2 inch Uniseal Image

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1 1/2" inch Uniseal U150
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds

Uniseals Save
1 Uniseal £4.90
5 Uniseals £23.49 4.1%
10 Uniseals £37.49 23.5%
20 Uniseals £67.99 30.6%
Uniseals and Holesaw Kits
5 & Holesaw Kit £36.99
10 & Holesaw Kit £51.99
20 & Holesaw Kit £82.99

Free Postage in the UK. Target delivery - three days.

Ideal for 1 1/2" inch pressure pipe. For 40mm household pipe see 1 1/4" U125 Uniseal.



Buy 2 inch Uniseal Image

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2" inch Uniseal U200
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds

Uniseals Save
1 Uniseal £7.80
5 Uniseals £32.49 16.7%
10 Uniseals £58.99 24.4%
20 Uniseals £98.99 36.5%
Uniseals and Holesaw Kits
5 & Holesaw Kit £46.99
10 & Holesaw Kit £74.99
20 & Holesaw Kit £114.99

Free Postage in the UK. Target delivery - three days.

Used in Koi and fish pond filtration systems. Achieves an excellent seal on 2" pressure pipe or any pipe with and outside diameter of 60mm.



Buy 2.75 inch Uniseal Image

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2 3/4" inch Uniseal U275
Tank connector, bulkhead for Hydroponics, Aquaponics. Excellent as a Hydroponic Grommet.

Uniseals Save
1 Uniseal £10.50
5 Uniseals £42.99 18.1%
10 Uniseals £78.99 24.8%
20 Uniseals £138.99 33.8%
Uniseals and Holesaw Kits
5 & Holesaw Kit £59.99
10 & Holesaw Kit £96.99
20 & Holesaw Kit £156.99

Free Postage in the UK. Target delivery - three days.

Ideal for metric pipe with an Outside Diameter of 75mm.



Buy 3 inch Uniseal Image

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3" inch Uniseal U300
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds

Uniseals Save
1 Uniseal £10.00
5 Uniseals £42.99 14.0%
10 Uniseals £74.99 25.0%
20 Uniseals £128.99 35.5%
Uniseals and Holesaw Kits
5 & Holesaw Kit £59.99
10 & Holesaw Kit £92.99
20 & Holesaw Kit £146.99

Free Postage in the UK. Target delivery - three days.

Used in Koi and fish pond filtration systems. Particularly useful in DIY blue barrel filter setups as shown in the uniseal images at the bottom of the page.



Buy 4 inch Uniseal Image

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4" inch Uniseal U400
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds.

Uniseals Save
1 Uniseal £11.40
5 Uniseals £47.99 15.8%
10 Uniseals £84.99 25.4%
20 Uniseals £148.99 34.7%
Uniseals and Holesaw Kits
5 & Holesaw Kit £67.99
10 & Holesaw Kit £104.99
20 & Holesaw Kit £169.99

Free Postage in the UK. Target delivery - three days.

Often used to connect a pond bottom drain to part 1 of a fish pond filtration system. Uniseal bulkheads are less expensive, take less time to install and will last without failure. Not prone to failure in freezing temperatures.



Buy 4 inch-SDR35 Uniseal Image

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4" inch Uniseal U400-SDR35
Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds. Works with underground drainage/waste pipe.

Uniseals Save
1 Uniseal £12.60
5 Uniseals £53.99 14.3%
10 Uniseals £93.99 25.4%
20 Uniseals £169.99 32.5%
Uniseals and Holesaw Kits
5 & Holesaw Kit £73.99
10 & Holesaw Kit £111.99
20 & Holesaw Kit £189.99

Free Postage in the UK. Target delivery - three days.

For underground drainage pipe (orange in the UK). Often used to connect a pond bottom drain to part 1 of a fish pond filtration system. Uniseal bulkheads are less expensive, take less time to install and will last without failure even in freezing temperatures.



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Hydroponic Grommets - All Sizes

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