Description: These high-quality black rubber conical stoppers (size 24) are ideal for sealing flasks, test tubes, jars, and other laboratory glassware. Perfectly sized for tubes with a 25mm diameter. Each stopper measures 35mm in height, with a larger diameter of 29mm, a smaller diameter of 22mm, and a mid-point diameter of 24mm. Manufactured from a chemically and thermally resistant rubber compound (GOST 7852-76, 23-6-3), they withstand temperatures ranging from -8°C to +80°C. Please note: These stoppers have a rubber odor; consider this when using them for non-laboratory applications. We also offer similar stoppers in sizes: 5, 7.5, 10, 12.5, 14.5, 16, 19, 21.5, 29, 34.5, 40, 45, 50, 60, 85, and 100mm, available in packs of 1, 2, 5, 10, 20, 50, 75, and 100.
US: temporary delays — postal services aligning new import rules, 
EU: 1–2 weeks, 🌍 Worldwide: 1–4 weeks ✈️