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Thermo Scientific Nalgene™ Carboy Replacement Screw Closures and Gaskets

Guarantee a leakproof system using Thermo Scientific™ Nalgene™ Replacement Screw Closures and Gaskets.

Manufacturer: thermo scientific  N7121510053

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† The term “leakproof” applies to Thermo Scientific Nalgene products that meet the following criteria: a) Bottle/flask/funnel closure systems with closures smaller than 100mm, after they are filled with water, inverted, withstand air pressure of 2psig for 2 minutes, and no water escapes;. b) Bottle/funnel/flask closure systems of larger than 100mm after they are filled with water, inverted for 15 minutes, and no water escapes. Note: these tests, using other liquids, may not yield the same results. To ensure safe usage, customers are advised to test Thermo Scientific Nalgene bottles and closures under conditions of their planned applications. Thermo Scientific Nalgene products are leakproof at ambient temperature and pressure when used with their Nalgene closures.

Catalog No. 12-565-978


Description & Specifications


Closure Size 53B
Color White
Description Replacement Closure
For Use With Nalgene Large Carboys and Bottles
Material HDPE
No. per Case 12
No. per Pack 12

Guarantee leakproof services with secure-fitting Thermo Scientific™ Nalgene™ Replacement Screw Closures and Gaskets for Nalgene Carboys.

  • Made to fit Nalgene Carboys