Description
Ground joint stopper made of PTFE, 29/32 is a hermetic laboratory stopper intended for standard ground-joint connections on larger flasks, condensers and reaction apparatus. Made entirely from PTFE, it forms an inert, chemically resistant seal on NS 29/32 joints commonly encountered in organic synthesis, distillation and preparative chemistry. The stopper can be used at temperatures up to 270 °C, allowing reliable performance from ambient conditions through moderately heated processes. With a net weight of 0,068 kg, the component remains easy to handle while providing a robust closure for routine glassware setups. This plastic stopper from manufacturer Labbox helps avoid glass-to-glass seizure and reduces the risk of breakage associated with conventional stoppers. PTFE’s non-stick surface and solvent resistance support repeated use in demanding chemical environments. Supplied as 1 piece, it is ready for direct integration into European standard ground-joint systems where a tight, reusable PTFE seal is preferred for analytical or synthetic laboratory work.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: PTFE
- Joint size: NS 29/32
- Temperature resistance: up to 270 °C
- Seal type: Hermetic
- EAN: 8434868056299
- GTIN: 08434868056299
- Technical Information Sheet:
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Questions about Flat head stopper, PTFE, 29/32
What is this article?
Flat head stopper, PTFE, 29/32 is the article on this page. Luminix Health distributes Labbox 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.