✔ PTFE solid stopper with closed bottom. 

✔ Features a handle for easy handling and removal. 

✔ The stoppers are made of PTFE, excellent chemical resistance, corrosion resistance, and durability, ensuring long-lasting performance. 

✔ Designed for laboratory liquid storage bottles, home brewing, and various other sealing scenarios, the premium PTFE stoppers cater to a wide range of applications.