PTFE-seal for cones and sockets NS 100

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PTFE-seal for cone and socket NS 100/60, prevent seizing-up and create a gas-tight and liquid-tight joint between standard grounds (NS), glass components. Practical, handy knurled grip allows easy separation of ground glass joints. Vacuum tight without seal grease.
Joint socket/DURAN (shape E) size 100/60 Joint socket/DURAN (shape E) size 100/60, OD 110 mm,...