Description
Stirrer seal NS 29/32, PTFE is a ground-joint sealing component designed for reliable guidance and sealing of stirrer shafts in laboratory glassware. The PTFE ground core features raised sealing rings that reduce contact area in the joint socket, making the core easier to release and helping to minimise glass breakage. A specialised PTFE seal with an FKM O-ring, combined with metered pressure from the PPS GL screw cap, ensures correct sealing against the stirrer shaft. Intended for stirrer shafts of 8 mm diameter, the seal is vacuum-compatible and provides precise guidance for both stainless-steel and glass stirrer shafts. This compact accessory from manufacturer Heidolph is suited to routine stirring setups that require chemical resistance and a secure vacuum-tight connection at the NS 29/32 joint. Supplied as 1 piece, it has a net weight of 0,080 kg and a gross weight of 0,164 kg, making it a practical spare or replacement part for laboratory stirring assemblies.
This article is part of Lids & seals, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: NS 29/32
- Material: PTFE
- Shaft diameter: 8 mm
- Seal components: PTFE seal with FKM O-ring, PPS GL screw cap
- EAN: 4255661402489
- Technical Information Sheet:
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Questions about Stirrer guide NS 29/32, PTFE
What is this article?
Stirrer guide NS 29/32, PTFE is the article on this page. Luminix Health distributes Heidolph for laboratory use. It sits in Lids & seals, inside Stoppers, caps & closures, in Labware.
Lids and seals are the covers of dishes, jars and tanks: a snap lid, a sealing film, a gasket. The seal is doing the work. A lid that only rests on the rim does not contain a volatile liquid.
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 Lids & seals. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Ground-joint glass stoppers 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.