Description
Ground joint stopper NS 45/40 in polypropylene (PP) provides a lightweight plastic closure for laboratory glassware fitted with a standard NS 45/40 ground joint. The stopper is moulded from polypropylene, a chemically resistant thermoplastic commonly chosen for general laboratory stoppers where glass is not required. NS 45/40 sizing matches widely used European standard taper joints, supporting secure seating on flasks, adapters and other jointed apparatus of the same nominal size. Supplied in a pack of 10 pieces, the format suits laboratories that need several matching stoppers for parallel setups or spare replacements. These plastic stoppers from manufacturer Vitlab are intended for routine labware sealing tasks in teaching, research and quality-control environments. Polypropylene construction keeps the component durable yet easy to handle compared with heavier glass alternatives. Select NS 45/40 when your apparatus specifies that joint size, and verify chemical compatibility of PP with the media in use before prolonged contact. The plain PP design supports straightforward cleaning and reuse under normal laboratory conditions.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Product type: Ground joint stopper
- Material: Polypropylene (PP)
- Joint size: NS 45/40
- Country of origin: Germany
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Standard joint stopper, PP, NS 45/40
What is this article?
Standard joint stopper, PP, NS 45/40 is the article on this page. Luminix Health distributes Vitlab 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.