Antelco Top Hat Grommet 100-Pack – Drip Irrigation Grommet

A watertight seal wherever pipe leaves a tank, tray or bucket

The Antelco Top Hat Grommet is a flexible, flanged rubber seal that pushes into a drilled hole in a reservoir, tank, tray, bucket or lid and grips the barbed fitting or irrigation pipe pushed through it. The result is a watertight, tool-free outlet with no glue, sealant or back nut – the standard way to take a feed, drain or return line out of a DIY deep water culture, flood and drain or drip reservoir. Choose the 13mm size for 13mm fittings and pipe, or the 19mm size for 19mm.

Key Benefits

• Watertight without sealant – the grommet compresses between the container wall and the fitting.
• Top hat flange – the lip stops it being pushed through the hole and spreads the load on thin plastic walls.
• Seals on curves – flexible enough for round buckets as well as flat-sided tanks.
• Removable – pull the fitting out to clean the tank or change the layout; an undamaged grommet can be reused.
• Two sizes – 13mm and 19mm to match the common irrigation pipe and fitting sizes.
• Made by Antelco – Australian micro irrigation manufacturer since 1985.

Leaks at the Reservoir Outlet

A slow drip where a pipe leaves the reservoir wastes nutrient solution, soaks the floor of the tent and raises grow room humidity. In a recirculating system it can drain the tank low enough to leave roots dry. Silicone and tape rarely last on flexible plastic; a correctly sized grommet in a clean hole seals tight for the life of the system, keeping the reservoir level steady and plants growing evenly.

How to Use

• Measure: check the grommet body and drill a test hole in an offcut first – it should be a snug push fit, not loose.
• Drill: use a hole saw or step drill and remove any burr so the edge cannot cut the grommet.
• Fit: push the grommet in from the outside so the flange sits flat against the wall.
• Insert the fitting: wet the barb or pipe with clean water and push it through with a twisting action.
• Test: fill the container above the hole and check for drips before connecting the pump.

Technical Specifications