Description
Silicone seal GL18 16x10 with PTFE cuff is a laboratory sealing element engineered for GL 18 connections that require both elasticity and chemical resistance. The silicone body is fitted with a vulcanised PTFE cuff, giving a soft, compressible seal face paired with an inert PTFE contact surface. Dimensions are outer diameter 16 mm and inner diameter 10 mm, matching tubing diameters from 9,0 to 11,0 mm. Offered in packs of 10 pieces, these seals serve as septa or gasket inserts in glassware, reactors and fluid lines where leak-tight performance and material compatibility matter. Manufactured by Witeg, the silicone–PTFE combination delivers dependable sealing under typical laboratory conditions without adding metallic components. Approximate net weight is 0,001 kg per seal. They are well suited to analytical, preparative and general laboratory applications that demand clean, chemically stable joints on GL 18 threads.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 10 pc(s)
- Material: Silicone with vulcanised PTFE cuff
- Thread size: GL 18
- Outer diameter: 16 mm
- Inner diameter: 10 mm
- Tube compatibility: 9,0–11,0 mm
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Questions about Gaskets GL 18
What is this article?
Gaskets GL 18 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
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 Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, 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.