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Thermo Scientific™ Nalgene™ Filling/Venting Closures Available on GSA/VA Contract for Federal Government customers only.

Create aseptic handling solutions for pharmaceutical, biotechnology and laboratory liquid transfer applications by using these polypropylene filling/venting closures.

Manufacturer:  Thermo Scientific™ 21620531

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Catalog No. 02-923-13Y

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Create aseptic handling solutions for pharmaceutical, biotechnology and laboratory liquid transfer applications using Thermo Scientific™ Nalgene™ Filling/Venting Closures. Ready to accept additional fluid transfer components such as aseptic connectors and air vent filters, these 3-port closures are available for use with Nalgene bottles and carboys with 53B or 83B closures, including pre-mounted lengths of platinum-cured silicone tubing for easy customization of bottles and carboys.

  • Autoclavable closures are specifically designed to mate with most Nalgene bottles and carboys
  • Leakproof† systems provide secure, aseptic handling of high-valued products compared to pouring

Nalgene 50 platinum-cured silicone tubing and TPE vent port cap.

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53 mm
1/4 in.
7.62 cm
Platinum-cured Silicone, Platinum-cured Silicone Tubing, Polypropylene, TPE
3-port closure
6.35 mm
Nalgene bottles and carboys with 53B closures


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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.