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 container, 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.
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.






