#7.5 Solid Rubber Stopper (SRS)
The #7.5 Solid Rubber Stopper (SRS) is a solid pure white gum laboratory stopper. The top diameter is 1 1/2" and the bottom diameter is 1 1/4". This stopper is solid and does not have a hole drilled in it. A perfect stopper to use if fermentation has ceased or you are storing your clean and dried container. Fits 1000 ml Erlenmeyer Flasks.
Also available as a #7.5 drilled rubber stopper.