| Cat. No. | Cone |
| 1221/1 | B 10 |
| 1221/2 | B 14 |
| 1221/3 | B 19 |
| 1221/4 | B 24 |
| 1221/5 | B 29 |
| 1221/6 | B 34 |
Solid Glass Stopper – Penny / Flat Head
Solid Glass Stoppers with penny or flat head design are used for securely sealing laboratory glassware such as flasks, bottles and reagent containers. The flat head provides easy handling and firm grip, while the solid construction ensures durability and long service life. Manufactured from high-quality borosilicate glass, these stoppers offer excellent resistance to heat and chemicals, along with a precision-ground surface for a tight, leak-resistant seal.
