Description
Silicone rubber gasket GL 25 is a PTFE-coated sealing element designed for laboratory glassware equipped with GL 25 screw threads. The silicone rubber body combined with a PTFE coating offers a resilient seal with an improved contact surface for bottles, flasks and related vessels in analytical and preparative environments. Delivered as a single piece with a net weight of 0,002 kg, this gasket functions as a spare or replacement part for GL 25 connections where a durable, flexible seal is needed. The PTFE coating assists in reducing adhesion at the sealing interface, while the silicone core preserves the elasticity required for frequent assembly and disassembly. Intended for use with corresponding screw caps and bottle necks of the GL 25 standard, it is grouped among septa and sealing accessories and is manufactured by Witeg in Germany. Its defined GL 25 size ensures proper dimensional match with common laboratory thread systems, supporting reliable, leak-tight closures on glassware during routine handling, storage and transfer of liquids and reagents in the laboratory.
This article is part of Chromatography accessories, in Vials, caps & septa.
Key features
- Pack size: 1 pc
- Product type: Silicone rubber gasket, PTFE-coated
- Thread size: GL 25
- Country of origin: Germany
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Questions about Silicone rubber seal GL 25
What is this article?
Silicone rubber seal GL 25 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Chromatography accessories, inside Vials, caps & septa, in Chromatography equipment.
These are the small chromatography parts that are not a column, a vial or a syringe: vial racks, solvent filters, waste caps, ferrule kits. A solvent inlet filter is what keeps the pump from swallowing particles out of the bottle.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Chromatography accessories. The catalogue is Chromatography equipment.
Shelves beside this one are Vial caps & septa, Autosampler vials, Crimpers & decappers and Vial inserts.
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.