3/4″ Circle Grommets


  • Fits 1″ OD Hole
  • 3/4″ ID – 1″ OD
  • Flexible Hard Rubber
  • Works with 3/4″ OD fittings
  • 1000’s of uses


Earn up to 12 Psilly Bucks™ .


3/4″ Circle Grommets

3/4″ Circle Grommets are durable rubber grommets for all your mushroom, hydroponic and/or irrigation needs. These are direct replacement grommets for our FAME Kit filter and humidifier attachment. It’s also the same one that comes with the MycoMIST™ Humidifier Kit. Use these to replace old ones on lids you purchased to save a bundle or use them to build your own and save even more!

These grommets are also used in our MycroGROW™ Auto Kit for our custom made MycroMIST™ Humidifier System. Great for bringing 1/2″ SCH40 PVC Pipe into any sealed chamber with a watertight seal. Simply drill a hole using any standard 1″ hole-saw, press in the circle grommet, and then press your fitting through the grommet hole. Works great for hundreds of applications!


  • Fits 1″ Hole
  • 3/4″ ID – 1″ OD
  • Flexible Hard Rubber
  • Works with most 3/4″ OD fittings
  • 1000’s of uses



grommet is a ring or edge strip inserted into a hole through thin material, typically a sheet of textile fabric, sheet metal or composite of carbon fiber, wood or honeycomb. Grommets are generally flared or collared on each side to keep them in place, and are often made of metalplastic, or rubber. They may be used to prevent tearing or abrasion of the pierced material or protection from abrasion of the insulation on the wire, cable, line being routed through the penetration, and to cover sharp edges of the piercing, or all of the above.

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