13mm Vial Rubber Stoppers (100 Count) Mushroom Self Healing Injection Ports Solid

• Size: 13mm
• Used for 13mm glass vial and liquid culture jars, fit about 7mm diameter opening(Please refer to the picture).
• Self Healing Rubber Stoppers----Can Create a great solid seal.
• Excellent Heat Stability (Butyl Rubber)-----can be sterilized by steam under high pressure.
• It is reusable and not out of shape.
• Great for liquid culture, BRF Jars, injection, Supplemented substrate jars, Grain Masters