Material : The vial rubber stopper is made of composite material, which is clean, stable, flexible, washable, reusable without deformation, and durable. .
Features : These self-healing spouts help you seal your bottle better and stabilize its contents.
Dimensions : Rubber stoppers are available in cap diameters of 20mm and 13mm and stoppers in diameters of 13mm and 7mm, suitable for vials, jars or test tubes with different opening sizes.
Easy to use : These self-healing rubber injection ports are very convenient to use, you can inject the culture with the injection needle without removing the rubber stopper, perfect for mushroom cultivation.
Multiple Uses : These rubber injection ports can be used in the laboratory. They are suitable for storing chemical products and also for garden drip irrigation.
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