Butyl Rubber Stopper - List of Manufacturers, Suppliers, Companies and Products

Anaerobic stopper (anaerobic plug)

Butyl rubber stopper with extremely low gas permeability.

Due to the low gas permeability and high recovery force after the withdrawal of the injection needle, there is an advantage of being able to use the injection needle multiple times when used with a vial. The part that is in contact with the bottle is made longer.