Description
Flexible stopper for sample tubes is a red polyethylene plug sized for tubes with a 13 mm diameter. The soft, compliant body conforms to the tube opening to give a reliable temporary seal during sample holding, short-term storage, and bench transfer. Flexibility helps the stopper seat evenly without forcing the glass or plastic rim, which is useful when tubes are opened and closed repeatedly in analytical or teaching laboratories. The red colour supports quick visual identification among mixed tube sets. These stoppers are intended for 13 mm tubes; related formats exist for 16 mm tubes where a matching diameter is required. Supplied in a pack of 1000 pieces, they are practical for high-volume sample processing and routine laboratory consumable stock. Offered by Labbox, the polyethylene stoppers provide a straightforward, flexible closure option for everyday sample-tube workflows. Pack net weight is 0,230 kg for convenient storage and handling.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1000 pc(s)
- Tube diameter: Ø 13 mm
- Material: polyethylene
- Colour: red
- Type: flexible stopper
- EAN: 8434868107175
- GTIN: 08434868106673
- Technical Information Sheet:
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Questions about Flexible stopper for test tubes, for Ø 13 mm tubes, blue
What is this article?
Flexible stopper for test tubes, for Ø 13 mm tubes, blue is the article on this page. Luminix Health distributes Labbox for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass stoppers, Lids & seals and Closures (other).
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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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.