SCIENCEWARE SAFE-LAB® Hollow Teflon PTFE Stoppers
Use these hollow Teflon® PTFE stoppers for boiling and distilling flasks with ground joints.
Features
- 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)
F20197-1515 Specifications
- Joint Size: 24/40
- Quantity / Pack: 2
F20197-1530 Specifications
- Joint Size: 29/42
- Quantity / Pack: 2
F20197-1550 Specifications
- Joint Size: 45/50
- Quantity / Pack: 1