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Nalgene® Top Works™ Aseptic Closure System, Silicone, for Bottles and Carboys, Thermo Scientific


Provides an aseptic seal for transferring high-purity fluids. For use with 125mL to 50L plastic bottles and carboys.

Eight configurations permit precise matching of Top Works components to bottles and carboys. Polypropylene closures have center holes. They are modified to clamp a silicone stopper onto the bottle or carboy, creating a primary elastomeric seal. High-purity, platinum-cured silicone tubing ensures the fluid contact areas are crevice-free, which helps eliminate cross-contamination.

Materials are food-grade and noncytotoxic. Complies with U.S.P. Class VI requirements. Autoclavable.

Note: Not for use when creating pressure or vacuum conditions with containers that are not rated for pressure or vacuum applications. Not intended for invasive use.

Ordering information: Solid insert units are complete with closure and insert. Two-port insert units include closure, two-port insert, and two pieces of 6.35mm (1/4") I.D. tubing. 21020-216 includes closure, three-port insert, one piece of 9.5mm (3/8") I.D. tubing, and two pieces of 6.35mm (1/4") I.D. tubing. 21020-210 includes closure, three-port insert, one piece of 3.175mm (1/8") I.D. tubing, and two pieces of 6.35mm (1/4") I.D. tubing. 21020-204 is complete with closure, three-port insert, one piece of 6.35mm (1/4") I.D. tubing, and two pieces of 3.175mm (1/8") I.D. tubing.



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Description Tubing I.D. Cap Size Supplier No. Catalog Number Unit List Price Quantity
Three-Port Inserts One 3.2 mm (1/8") and Two 6.4 mm (1/4") GL 45 PSF 2132-1003 T-2729-2 Case of 1 Retrieving
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