27 Piece Lab Rubber Stopper Set With Assorted Sizes From Size 000 Through Size 7 For Sealing Flasks, Tubes, And Jars In Home Labs And Classroom DIY Chemistry Projects, Two Per Size, One Size 7 Included, Solid Black

27-Piece Lab Rubber Stopper Set: Assorted Sizes #000-#7
✔️ 10x #000, 2x each for #00-#6, 1x #7, black; home-lab assortment.

This 27-piece lab rubber stopper set provides tapered solid rubber stoppers for sealing flasks, tubes, and jars in home labs and classroom projects. It’s designed for non aggressive solutions and educational experiments.

✅ #000: 10 pcs, 13/8mm x 17mm
✅ #00: 2 pcs, 15/11mm x 21mm
✅ #0: 2 pcs, 17/13mm x 21mm
✅ Includes 1x #7

💡 What is a rubber stopper used for in a home lab setup?

Rubber stoppers seal glassware to contain liquids and gases during experiments. Handy for simple science projects and classroom demos.

- Sealing flasks, tubes, and jars to prevent spills - Fits tapered sizes for common lab glassware - Great for non aggressive solutions in educational settings ✝️