Description
BOLA sealing stopper NS 29/32 is a PTFE laboratory closure with a standard ground joint and external sealing rings, finished with a hexagonal handle for secure grip and controlled fitting. Made from polytetrafluoroethylene, it offers broad chemical resistance and can be fitted without grease, unlike conventional glass stoppers. Removal is typically easier than with glass equivalents, supporting frequent assembly and disassembly of ground-joint apparatus in synthesis, distillation and general laboratory work. The hexagonal handle provides a defined wrench size of 35 mm for reliable handling. Net weight is 0,07 kg per piece, supplied as a single unit. These stoppers from manufacturer Bohlender are intended for standard NS 29/32 joints; note that thermal expansion of the PTFE body can, in rare cases, stress glass joints if overheated. Suitable for routine sealing tasks where a durable, chemically inert PTFE stopper with hexagonal grip is required.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Brand: BOLA
- Material: Polytetrafluoroethylene (PTFE)
- Joint size: NS 29/32
- Handle: Hexagonal, SW 35 mm
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Questions about BOLA Stoppers, NS 29/32 PTFE, hexagonal grip
What is this article?
BOLA Stoppers, NS 29/32 PTFE, hexagonal grip is the article on this page. Luminix Health distributes Bohlender 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.