OLYCRAFT 150pcs Vial Rubber Stoppers Mushroom Self Healing Injection Ports Rubber Bottle Stoppers Fit for 13mm/0.5 Inch Opening for Glass Vial and Liquid Culture Jars
【Size & Package】--About 19.5mm/0.77” in diameter, 8.5mm/0.33” thick, hole: 8.5mm/0.33”; Fit for 13mm/0.51” in diameter Opening Mason Jar Lids. Package includes 150pcs vial rubber stoppers.
【Butyl Rubber】--Butyl rubber is of excellent heat stability which can be sterilized by steam under high pressure.
【Premium Quality】--Made of high quality Rubber, these stoppers are durable, washable, reusable and highly chemical-resistant.
【Convenient & Practical 】--Mainly used for mushroom growing and liquid culture production. Injection port use with hypodermic needles to inject cultures, therefore never needing to remove the lids on your culture jars.
【Wide Applications】--Great for liquid culture, BRF jars, injection, supplemented substrate jars, grain masters. stoppers can be used to make self-healing injection ports in mason jar lids or medicine bottles.
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