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Description

We offer a wide range of serrated and non-serrated natural rubber and silicone rubber septa and sleeve stoppers for use as temporary closures for glassware joints and tubes, bottles, NMR tubes, ampoules used in air-sensitive chemistry. After piercing the septum with a non-coring needle, the rubber closes the puncture, providing an air and moisture-tight seal to protect the contents of the vessel or container from the atmosphere.