Wine bucket cover

[wineview]

What do you call the rubber piece that seals the drilled hole in the cover of a wine bucket where you place the airlock. Would they be bung grommets?

I want to order some but don't know what to call them.

 

[sour_grapes]

Googling "airlock grommet" worked for me.

 

[Ajmassa]

I like to use these rubber lid grommets on my racking cane. The grommet fits perfectly and I’ll use it to hold on a piece of mesh around the bottom as a strainer when racking. And also when the cane is in a bucket clip it still tends to slide down. I slide another grommet to where I want the cane to stay and use as a stopper