Description
NS stopper made of polyethylene (PE-HD) NS 34/35 is a laboratory stopper designed for sealing standard ground joints on glass apparatus. Produced from high-density polyethylene (HDPE), it corresponds to the NS 34/35 joint size frequently encountered in larger flasks, reactors and distillation setups. The PE-HD construction provides mechanical robustness and chemical resistance suitable for typical laboratory conditions, assisting in the secure closure of vessels to limit loss of volatile components or ingress of contaminants. Offered as one piece, the stopper fits matching ground joints firmly and can be inserted or withdrawn by hand for repeated use. This functional item from manufacturer Hecht is well suited to research, educational and industrial laboratories that rely on consistent joint sealing. The polyethylene body permits straightforward cleaning and fits seamlessly into established glassware configurations. With its NS 34/35 dimensions the stopper serves as a practical spare or replacement component for multi-neck flasks, adapters and related equipment requiring reliable PE-HD closures.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: NS stopper
- Material: High-density polyethylene (HDPE)
- Joint size: NS 34/35
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Questions about Stoppers of HDPE, interchangeable NS 34/35
What is this article?
Stoppers of HDPE, interchangeable NS 34/35 is the article on this page. Luminix Health distributes Hecht 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.