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Universal Silicone Stopper

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Thanks to their inverted, conical shape, our original Lab Society silicone stoppers function as virtually universal filter adapters. 
As you can see in the images, regardless of what size glassware you are trying to fill, these highly durable, blue-colored silicone stoppers are exactly what you need to create a tight seal and withstand the pressures of a vacuum system.

SKU: 4201663 Category:
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