Description
Silicone sealing ring, VMQ, with vulcanised PTFE cuff is a laboratory sealing component matched to GL 32 screw connection pieces and intended for tubes with internal diameter 11,0–13,0 mm. The ring itself has an inner diameter of 12 mm and an outer diameter of 29 mm. Constructed from silicone (VMQ) with a vulcanised PTFE cuff on one face, it exhibits reliable sealing behaviour while the PTFE layer contributes a useful degree of material inertness. The central bore permits insertion of glass rods, olives, flexible tubing and similar laboratory items. Typical applications include sealing joints and securely fixing tubes in glassware assemblies. Supplied as a single piece from manufacturer Duran/DWK Life Sciences, the component offers a practical hybrid silicone-PTFE solution for everyday laboratory connections. Gross weight is 0,007 kg and net weight 0,005 kg, providing a lightweight yet durable seal for routine experimental setups requiring dependable tube fixation and chemical compatibility at the contact surface.
This article is part of Lids & seals, in Stoppers, caps & closures.
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Questions about Silicone Sealing Ring, VMQ, with bonded PTFE face
What is this article?
Silicone Sealing Ring, VMQ, with bonded PTFE face is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Lids & seals, inside Stoppers, caps & closures, in Labware.
Lids and seals are the covers of dishes, jars and tanks: a snap lid, a sealing film, a gasket. The seal is doing the work. A lid that only rests on the rim does not contain a volatile liquid.
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 Lids & seals. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Ground-joint glass stoppers 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.

