Description
Poly stopper PE NS 12/21 is a plastic laboratory stopper for standard ground joints sized NS 12/21. Fabricated from high-density polyethylene (HDPE), it belongs to the product groups of normschliff stoppers and plastic stoppers used to close compatible glassware joints. The stopper is offered in a pack size of 1 pc and carries the designation Polystopfen/PE NS 12/21. Material details confirm polyethylen hohe Dichte (HDPE) construction paired with Schliffgröße NS 12/21, making the item suitable for routine sealing tasks on matching taper joints. Available from manufacturer IDL GmbH, this polyethylene stopper integrates into laboratory glass assemblies that require an NS 12/21 plastic closure. Its straightforward PE design supports everyday handling of ground-joint equipment without additional complexity. The combination of HDPE material and precise NS 12/21 sizing ensures clear identification for laboratory procurement and glassware organisation. This poly stopper remains a practical accessory for standard taper applications based solely on the stated size and material parameters.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Poly stopper PE
- Joint size: NS 12/21
- Material: High-density polyethylene (HDPE)
- Technical Information Sheet:
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Questions about PE stopper, for standard ground joint ST 12/21
What is this article?
PE stopper, for standard ground joint ST 12/21 is the article on this page. Luminix Health distributes IDL GmbH 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.