Description
Nalgene™ push-in caps for plastic centrifuge tubes are autoclavable closures fitted with a pull tab for easy removal after use. Designed for Nalgene round and conical centrifuge tubes, they provide an 18 mm closure size for tubes with an 18 mm outer diameter. The push-in seal supports secure sample containment during handling, storage, and centrifugation in laboratories that rely on plastic tube formats. Supplied as a pack of twenty from manufacturer Thermo Scientific - Laboratory Plastics, the quantity suits routine bench replenishment. Gross weight is 0,027 kg per pack, with a packaging volume of 0,001 m³. Belonging to the Nalgene™ range of laboratory plastics, these caps combine autoclave compatibility with convenient tab-assisted opening, helping operators process samples efficiently. They are a practical accessory for workflows that standardise on matching plastic centrifuge tubes and need reliable, easy-to-remove push-in closures for everyday laboratory use.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 20 pc(s)
- Closure size: 18 mm
- Type: Centrifuge tube cap
- Fit: Round and conical Nalgene centrifuge tubes
- Tube outer diameter: 18 mm
- Autoclavable: Yes
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Questions about Nalgene™ Friction-Fit Polypropylene Closures for Plastic Centrifuge
What is this article?
Nalgene™ Friction-Fit Polypropylene Closures for Plastic Centrifuge is the article on this page. Luminix Health distributes Thermo Scientific - Laboratory Plastics for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, Autosampler vials, Crimpers & decappers and Vial inserts.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.



