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Safe-Lab Hollow Teflon PTFE Stoppers for Tapered Joints

For Boiling & Distilling Flasks

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

  • Easily removed from standard tapered glassware by turning the red extraction nut to apply a safe, gentle and even force against the mouth of the vessel
  • Helps eliminate accidents and breakage
  • Autoclave safe at 121 °C (250 °F)

Note: TEFLON® is a registered trademark of The Chemours Company FC LLC and used under license by Bel-Art Products, Inc. Stopper comes with polypropylene extracting nut for easy removal from flask.

Product Variants

Catalog No. Joint Size Pk/Cs variant_of Quantity / Pack Where to Buy
F20197-1530 29/42 1 Safe-Lab Hollow Teflon PTFE Stoppers for Tapered Joints 2 Find a Distributor
F20197-1515 24/40 1 Safe-Lab Hollow Teflon PTFE Stoppers for Tapered Joints 2 Find a Distributor

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