#11 Solid Rubber Stopper (SRS)

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The #11 Solid Rubber Stopper (SRS) is a pure white gum laboratory stopper. The top diameter is 2 1/4" and the bottom diameter is 1 15/16". It is a solid stopper, perfect for sealin g a fermenter in which fermentation has completed or storing a clean and dry fermentor.The #11 stopper is also available as a #11 drilled rubber stopper (drs). Show more