stonylab Vacuum Flow Control Adapter, Borosilicate Glass Adapter with PTFE Stopcock and Bent Hose Connection, Standard 14/20 Outer Joint Adapter for Lab Supply

14/20 standard outer joint, Fits on StonyLab 12 mm (15/32 inch) O.D. 8 mm (5/16 inch) I.D. vacuum tubing, Used for various chemical experiments that need to control the flow of gases, liquids or other reactants; eg, connect an inert gas supplier with a multi-neck flask to enable counter-flow, ensuring the accuracy and stability of experiments, Borosilicate glass, heavy duty and reusable; maximum withstand temperature 200°C, Warranty: StonyLab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied