#5.5 Solid Rubber Stopper (SRS)
This #5.5 Solid Rubber Stopper (SRS) is a solid lab stopper. The top of the stopper's diameter is 1 1/8" and the bottom diameter is 1". It does not have a hole drilled in it, the perfect stopper to use if fermentation has ceased or you are storing your clean and dried container.
This 5.5 SRS stopper is also available as a #5.5 drilled rubber stopper (drs).