Employ Thermo Scientific Nalgene Quick-Action ETFE Tefzelâ„¢ Spigots as replacement spigots for Nalgene DS2327-series fluorinated carboys. They are chemically resistant to selected solvents and other chemicals. Body and plug are made of Tefzel Ethylene tetrafluoroethylene. Accepts tubing with 5/8″ I.D.