Nalgene™ Polypropylene Fluid-Transfer ClosureNalgene Polypropylene Fluid Transfer Closure Perform fluid transfer in the lab or field with this 70mm closure compatible with Thermo Scientific Nalgene Mason Jars (Cat. No. 2115). Color: White Description: Nalgene Polypropylene Flud Transfer Closure, 6 cs. Type: Closure Neck Finish: 70 mm Closure Included: Yes Autoclavable: Autoclavable Closure Material: Polypropylene For Use With (Equipment): Nalgene Mason Jars or 125 and 250mL straight sided jars