Rubber Cork – Size No. 11

Rubber Cork – Size No. 11 provides a secure, leak-proof seal for laboratory glassware. Its soft, flexible rubber construction ensures a snug fit in flasks, test tubes, and bottles, making it ideal for a variety of scientific applications.

• High-Grade Rubber Construction: Crafted from extra-soft, flexible rubber, this cork forms a tight, leak-proof seal. Its pliable design fits securely without damaging the glassware, offering durability even in demanding laboratory settings.
• Precision-Molded Hole for Easy Insertion: The cork features a precisely molded hole that allows for easy insertion of glass or plastic tubing. This ensures a snug fit for gas collection, liquid transfer, or closed-system experiments, helping to prevent leaks and maintain safety during your work.
• Versatile Applications: Whether you’re conducting gas collection, liquid transfer, or closed-system experiments, this cork excels. It creates a reliable seal during chemical reactions, distillations, or any airtight applications, ensuring both accuracy and safety.
• Durable and Reusable: Made from chemically resistant materials, the cork withstands exposure to acids and solvents commonly used in labs. Its durability allows for multiple uses, making it a cost-effective, environmentally friendly option for laboratories.
• Precision Fit for Common Glassware: With a top diameter of 33 mm and a bottom diameter of 29 mm, the cork fits a variety of common laboratory glassware. Its precise design ensures a tight seal, preventing leaks and safeguarding your experimental results.