Description: These high-quality rubber conical stoppers are versatile and widely used across various industries. Primarily designed for sealing laboratory glassware such as flasks and test tubes, they also find applications in numerous household and DIY projects. Each stopper features a tapered design for a secure fit.
These stoppers have a rubber odor. Avoid use with sulfuric acid, nitric acid, acetone, gasoline, and chloroform.
US: temporary delays — postal services aligning new import rules, 
EU: 1–2 weeks, 🌍 Worldwide: 1–4 weeks ✈️