Description
Replacement PTFE ring NS 14/23 is a precision spare sealing component for laboratory ground-joint assemblies. Made from chemically resistant polytetrafluoroethylene (PTFE), it functions as a replacement gasket for FCH-V cores in the standard NS 14/23 joint size. PTFE provides high chemical inertness and thermal stability, supporting reliable sealing where aggressive solvents, acids or elevated temperatures are encountered. Supplied as a single piece with a net weight of 0,001 kg, the ring is intended for routine maintenance of distillation, reaction and vacuum glassware. When original seals wear or harden, this spare restores a tight, leak-resistant fit at the ground joint without altering apparatus geometry. The part belongs to the family of ground-joint sleeves, collar seals and related laboratory fittings and is produced by manufacturer Witeg in Germany. Its compact form and material durability make it a practical consumable for analytical and preparative laboratories that rely on consistent joint integrity across repeated assembly and disassembly cycles.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Material: PTFE
- Joint size: NS 14/23
- Type: Replacement seal for FCH-V cores
- Country of origin: Germany
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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 14/23
What is this article?
Spare seals PTFE ST 14/23 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 Labware.
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 Labware.
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.