Use these hollow PTFE plastic stoppers for boiling and distilling flasks with ground joints. They are 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. Stoppers help eliminate accidents and breakage and are autoclave safe at 121°C (250°F).
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We are currently working diligently to update our website pricing information for the New Year. If you place an order, you will be acknowledged with any corrected pricing. If you'd like the most current information sooner, please don't hesitate to drop us an email or give us a call and we'd be happy to assist. Thank you for your patience while we are updating.
800-334-7725
office@krackeler.com
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