Description
Octagonal cap stopper PE-HD in blue is a round ground-joint closure designed for oxygen bottles with NS 34 geometry. Built from high-density polyethylene (HDPE), it pairs chemical resistance and mechanical toughness with a practical octagonal grip that supports secure handling when seating or removing the stopper on standard laboratory glassware. The joint size is specified as NS 34/35, matching common oxygen-bottle and related ground-joint interfaces used in analytical and preparative work. Supplied as a single piece, the stopper suits routine laboratory organisation where a durable plastic closure is preferred over glass for impact resistance and reduced breakage risk. Its blue colour aids quick visual identification among mixed stopper inventories. From manufacturer lab-o-plastix, this PE-HD design is intended for laboratories that need reliable, lightweight stoppers for oxygen-related bottle setups and comparable NS applications. The round body with octagonal cap profile balances a stable seal geometry with an easy-to-turn head, supporting everyday use in teaching labs, quality-control environments, and general chemical handling without introducing metal components or complex mechanisms.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Octagonal cap stopper
- Material: Polyethylene high density (HDPE)
- Colour: Blue
- Joint size: NS 34/35
- Form: Round, for oxygen bottles
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Questions about NS-plastic-stoppers, HDPE, blue, round, hexagonal for oxygen bottles, NS 34
What is this article?
NS-plastic-stoppers, HDPE, blue, round, hexagonal for oxygen bottles, NS 34 is the article on this page. Luminix Health distributes lab-o-plastix for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
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 Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, 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.