size: Top diameter 19.5±0.1mm (3/4") total height 9±0.1mm (5/16") Plunger diameter 13 ± 0.1mm, suitable for openings of 13 mm (0.51") in diameter Top thickness 3 ± 0.1mm Wide range of uses: The 20mm (T-type) flat butyl rubber stopper is suitable for glass bottles with a bottle mouth diameter of 20mm. It is the most widely used sealing plug. This product is not only suitable for 20-caliber control bottles and molded bottles. Also suitable for 20mm caliber bayonet bottle Western flask laboratory equipment sealing plug support 20 caliber vial, aluminum plastic cover, aluminum cover. At the same time, this rubber stopper is ideal for liquid culture, BRF tanks, injections, refill tanks and grain masterbatches. Can be used to make self-healing injection ports in Mason can lids or vials. Easy to use: Using a 7/16 to 1/2 inch drill bit, drill a hole in the metal or plastic can lid and then spring the stopper into place. Mainly used for mushroom cultivation and liquid culture production. It is used with a hypodermic needle to inject the culture, so there is never a need to remove the lid from the culture tank.
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