13mm Top Hat Rubber Grommet for Water Reservoirs/Hard Plastic Supply Pipes

Top Hat Rubber Grommet [13mm]

Top hat grommets are used in conjunction with take-off fittings, tubing and barbed irrigation fittings. They provide a seal around the fitting through a wall in a plastic containter, usually to provide a small diameter poly pipe branch from a large supply pipe.

The grommets fit inside a hole drilled in the supply pipe, or a reservoir container of water or nutrient for a garden or series of pots. 

We stock a series of sizes of Top Hat Grommet including:

6mm internal diameter (use holesaw size 10mm)
13mm internal diameter (use holesaw size 16mm)
19mm internal diameter (use holesaw size 22mm)

How to Use a Top Hat Grommet

Drill a hole according to the holesaw sizes above, clean any burrs, insert the top hat grommet, and then push the tube or barbed fitting through the grommet.

Top Hat Grommet Tips

For additional leak protection, we recommend some silicon around the rim of the grommet before insering it into the hole.
For hard rubber grommets (manufacturing quality varies), knead the rubber grommet in your hands before inserting it into the hole and connecting to it.