18mm Glass Stopper
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18.8mm Ground Glass Cleaning Plug. GonG .
These are all handblown by me here in Oregon.

High quality fittings and annealed for strength.
If you don’t see the adapter you need just ask and I will let you know if it is something I can customize for you. 
Thanks for looking-OGB

  • Item #: 18plug
  • Manufacturer: Oregonglassblower Scientific

18mm Glass Stopper

Price: $14.00
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