Polypropylene, PVDF, silicone.

• 6" (15,2 cm) polypropylene screw closure with 2" (5,1 cm) sanitary ferrule welded in the center
• 2" (5,1 cm) silicone gasket and PDVF True Union clamp
• Autoclavable

Use with Nalgene closed-dome tanks (Series 2650).