Description
DURAN® plastic stopper NS 85/55 is a white octagonal laboratory stopper made from low-density polyethylene (LDPE) for reliable sealing of glassware fitted with larger standard ground joints. Equipped with an octagonal top and blue insert, it conforms to DIN 12254 and delivers consistent performance for reagent and chemical storage. The polyethylene material combines chemical resistance with mechanical durability suited to everyday laboratory use. Its distinctive octagonal form provides a secure grip that facilitates controlled opening and closing of flasks and bottles. Available as a single unit from manufacturer Duran/DWK Life Sciences, the stopper is well suited to analytical, preparative and research workflows requiring a tight, reusable plastic closure. Lightweight construction eases handling while the white body and blue insert enable rapid visual recognition among other labware. This DURAN® stopper helps maintain sample integrity during storage and supports efficient bench organisation where larger joint sizes are employed.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Joint size: NS 85/55
- Material: Low-density polyethylene (LDPE)
- Colour: White with blue insert
- EAN: 4032051062221
- Technical Information Sheet:
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Questions about DURAN® Plastic Stopper, Polyethylene, white, octagonal
What is this article?
DURAN® Plastic Stopper, Polyethylene, white, octagonal is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
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 Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone 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.