Description
Replacement PTFE ring NS 29/32 is a spare sealing gasket intended for laboratory ground-joint assemblies that use FCH-V cores in the NS 29/32 size. Made entirely of polytetrafluoroethylene, the ring provides a chemically inert barrier that resists attack by most laboratory solvents, acids and bases while remaining dimensionally stable under normal working temperatures. It restores a reliable seal on worn or damaged conical joints without the need to replace the entire core, making it a practical maintenance component for distillation, reaction and vacuum apparatus. The part is supplied as a single piece with a net weight of only 0,001 kg, so it can be stocked economically for routine glassware service. Its NS 29/32 geometry conforms to the common European ground-joint standard, ensuring straightforward interchangeability with existing FCH-V fittings. This replacement seal from manufacturer Witeg is listed among laboratory sleeves, collar seals and related joint accessories, supporting clean, leak-resistant connections in everyday laboratory workflows where PTFE durability and chemical resistance are required.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Replacement PTFE seal ring
- Joint size: NS 29/32
- Material: PTFE
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Distillation & extraction glassware
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Distillation heads, adapters & columns
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Questions about Spare seals PTFE ST 29/32
What is this article?
Spare seals PTFE ST 29/32 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Matériel de laboratoire.
A still head, an adapter or a column is the glass between the boiling flask and the condenser. A Vigreux or packed column gives the vapour a surface so a closer-boiling mixture can separate. The joint sizes at both ends have to match the flask and the condenser.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Distillation heads, adapters & columns. The catalogue is Matériel de laboratoire.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
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.