CapitolBrand® Sleeve Stoppers for Standard Taper Joints, Natural Rubber

This natural white rubber sleeve stopper pulls over the neck of the bottle with the central area of the stopper being depressed within 1mm of the top to permit the insertion of a syringe needle. The puncture is self-sealing to permit the use of the entire contents. The first two digits refer to the plug diameter and the last two digits refer to the sleeve diameter.