8pcs Borosilicate Glass Solid Cone Penny Head Stopper with Standard Size Joint for Sealing Lab Glassware (24/29)

Standard Sizes: Available in 4 popular sizes to accommodate different types and sizes of lab containers Please choose the appropriate size according to your needs Suitable for science and laboratory glassware, used to seal lab glassware such as flasks, separatory funnels, cylinders Good sealing performance to prevent leakage of liquid or gas High light transmittance, high chemical stability, acid and alkali resistance Easy to clean and rotate in or out. Grooves in the sides help prevent slippage Package includes: 8Pcs Solid Cone Stopper

• Solid Cone Penny Head Stopper made of high quality borosilicate glass, durable construction, temperature resistance and corrosion resistance, the wall thickness is uniform, no bubbles, and sturdy and durable
• The joint is finely frosted, Joint are all standard size; easy to install and replace. joints are frosted for high air-sealed and no air leakage
• Easy to Clean and Reuse, the smooth surface of the glass makes it easy to clean and sterilize, allowing for repeated use across multiple experiments with consistent performance
• Suitable for laboratories in schools, factories, and enterprises to Sealing Lab Glassware, such as flasks and separatory funnels
• Each part is individually wrapped to ensure that the goods will not easily damaged during transportation. If you have any questions about our products, please contact us and we will resolve them for you