Material:Butyl Rubber
Size:20mm
Quantity:150
Applications.
1These stoppers can be used to manufacture self-healing injection ports for glass bottle caps or medicine bottles.
2 Mainly used for mushroom crop cultivation and liquid culture production.
3.Use a hypodermic needle to inject cultures, therefore eliminating the need to remove the lids from your culture jars.
4.They fit openings up to 12.5mm in diameter.