Description:
Use these hollow Teflon® PTFE stoppers for boiling and distilling flasks with ground joints. 2/pack.
- 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 121ºC (250ºF)
TEFLON® is a registered trademark of The Chemours Company FC LLC and used under license by Bel-Art Products, Inc.Use these hollow PTFE stoppers for boiling and distilling style flasks with ground joints. Stopper comes with polypropylene extracting nut for easy removal from flask.
Joint Size: 24/40