Description
Grip stoppers for test tubes Ø 16-17 mm are firm-closing laboratory closures moulded from polypropylene (PP) in a practical red colour. They are intended for standard test tubes in the 16–17 mm diameter range and provide a secure seal that supports everyday sample handling, short-term storage, and routine workflows. The polypropylene material combines chemical resistance suitable for many aqueous and common laboratory media with a grip design that aids insertion and removal without tools. Supplied as a bulk pack of 1000 pieces from manufacturer Witeg, the stoppers suit teaching laboratories, quality-control benches, and research groups that need consistent tube closure at scale. Each pack has a net weight of 0,973 kg, supporting straightforward stock planning and replenishment. These red PP grip stoppers help limit evaporation and contamination risk on open racks and during transport between workstations. They integrate easily into general laboratory consumable inventories wherever polypropylene-compatible sealing of 16–17 mm test tubes is required for reliable day-to-day operations.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1000 pc(s)
- Product type: Grip stopper for test tubes
- Suitable diameter: 16-17 mm
- Material: Polypropylene (PP)
- Colour: red
- Closure: firm-closing
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Questions about Stoppers for test tubes Ø 16-17 mm Colour red
What is this article?
Stoppers for test tubes Ø 16-17 mm Colour red is the article on this page. Luminix Health distributes Witeg 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.