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.

Ideal for 8mm PVC tubing.

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.

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

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.

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.

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.

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.

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

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.

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

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.

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.

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.