
Rubber bungs with integrated glass tubing for simple gas transfer and flow demonstrations.
Our Range Includes...
Small Rubber Stoppers with Tube: Sizes such as No.13 and No.21 for test tubes and small vessels.
Medium Rubber Stoppers with Tube: Sizes including No.23 and No.27 for standard laboratory glassware.
Large Rubber Stoppers with Tube: No.31 options for wider neck containers and demonstration apparatus.