Rubber Stoppers are suitable for oral liquid bottles, original solution bottles, essential oil bottles, freeze dried bottles, etc. These port rubber stopper may be used in the kitchen, laboratory, ect.

Specification:
Material: Butyl Rubber
Suitable for: 20mm Glass Vial
Inside diameter: 13mm
Outer diameter: 20mm
High: 9mm

Advantage:
Made of rubber , it is durable, washable and reusable. It forms a good seal and is suitable for long-term storage of liquids or solids.

Instruction :
These rubber caps can be punched with injection holes so that culture media can be injected with an injection needle without removing the rubber stopper.

NOTE: Our store has rubber stoppers caps of different styles, sizes and colors to choose from.