Safe-Lab Hollow Teflon PTFE Stoppers for Tapered Joints

Use these hollow Teflon® PTFE stoppers on boiling and distilling flasks with ground joints.

• Turn the red polypropylene extraction nut to remove the stopper from tapered glassware with safe, gentle, even force against the mouth of the vessel
• Helps eliminate accidents and breakage
• Autoclavable at 121 °C (250 °F)

TEFLON® is a registered trademark of The Chemours Company FC LLC and used under license by Bel-Art Products, Inc.