This product are replacements for 5.8L desiccators CLS3121200. They require a replacement 24/29 Standard Taper stopcock with a tooled hose connection. The plug material is PTFE.
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Pyrex® Large Top Desiccators with 24/29 Standard Taper Stopcock, 5.8L, Complete, Corning (CAT#: STEM-GLE-0646-LKN)