Description
Three-way T-stopcock with 2,5 mm bore and NS 18,8 joint provides reliable multi-path control for laboratory glassware systems handling liquids or gases. Solid, interchangeable NS glass plugs are retained by thread and screw connection and sealed with an O-ring, combining secure closure with straightforward plug replacement. The T-shaped three-way layout supports switching and diversion between ports in vacuum lines, manifolds, and reaction setups that use the larger NS 18,8 standard. A 2,5 mm bore offers practical flow while remaining suitable for precise laboratory regulation. From manufacturer Starke, the unit is offered as one piece for direct installation into compatible ground-joint apparatus. It fits research, process-development, and teaching environments where interchangeable stopcocks with threaded fastening and O-ring sealing are preferred. Defined bore and NS 18,8 sizing help ensure correct pairing with existing joints, adapters, and tubing, reducing assembly errors and supporting consistent day-to-day operation of glass vacuum and fluid systems.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Type: Three-way T-stopcock
- Bore: 2,5 mm
- Joint size: NS 18,8
- Plug design: Solid, interchangeable NS glass plugs
- Sealing: Thread, screw connection and O-ring
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Questions about Three-way T-cocks 2.5 mm bore, NS 18.8 with solid, interchangeable
What is this article?
Three-way T-cocks 2.5 mm bore, NS 18.8 with solid, interchangeable is the article on this page. Luminix Health distributes Starke for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
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 Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass stoppers, Lids & seals 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. Delivery across Europe, two to five days when in stock. 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.
