Hydrofarm HGGR50 (25 Pack), 1/2 Rubber Grommet, Black

It was not what I thought it was ... and not able to use it.

Works just as intended

This was for someone else.

Package the grommets were in was not sealed. Missing some

They work great for sealing houses in buckets for hydroponics.

Solid and well made, measurements are right on spec

The best Grommets Ive used for a water tight seal

So just to clarify the 1/2 is outside diameter so I think that makes the inside diameter 3/8. I will still put them to use just frustrating when I needed inside diameter to be 1/2

Exactly what I needed. Worked just as expected.

I bought these with Hydrofarm AAEL50 Active Aqua (10 Pack), 1/2 Elbow Connector, 1/2-Inch, Black, based on reviews and comments for other buyers. The grommet and the elbow complemented each other for a perfect fit. I used them to make self-watering 5-gallon bucket planters. The grommet seated perfectly in 3/4 drilled-out hole. The elbow just slipped right in. The rubber material was smooth and elastic, not rough and cracked as happened to old rubber.