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

A-OK

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.

These are the cheapest way to add a sight glass to your bucket

Solid and well made, measurements are right on spec

Well made and does the job on hydroponic Dutch buckets.

The best Grommets Ive used for a water tight seal

This was for someone else.

The inside hole (id) is 1/2 diameter...it will not fit inside of a 1/2 hole (which would be OD of 1/2) Bamboozled again!

Package the grommets were in was not sealed. Missing some

Perfect for DIY hydroponic! Very similar to the ones used in General Hydroponic water farm!