Description
Cock plugs in PTFE with a retaining device of PP are complete laboratory stopcock components for joint size 21,5 and a bore diameter of 6 mm. The PTFE plug body delivers broad chemical inertness for aggressive reagents, solvents and process media, while the polypropylene retainer keeps the plug securely seated during opening and closing. This complete unit is intended for installation in compatible ground-joint glassware used in distillation, extraction, titration and general liquid handling. Dimensional matching to joint 21,5 with a 6 mm bore supports controlled flow and reliable sealing in analytical and preparative setups. The lightweight construction, at about 0,001 kg per piece, aids straightforward handling and spare-part logistics. Supplied as a single piece from manufacturer Bohlender, the assembly is ready for routine laboratory use without additional fittings. PTFE contact surfaces help limit adsorption and extractables, supporting clean fluid paths in research and quality-control environments. Laboratories maintaining stopcock-equipped apparatus will find this complete PTFE cock plug with PP retaining device a practical replacement component for joint 21,5 systems requiring a 6 mm bore.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Cock plugs, complete
- Material: PTFE
- Retaining device: PP
- Joint size: 21,5
- Bore diameter: 6 mm
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Questions about Cock plugs, PTFE, retaining device of PP, for joint 21.5, bore Ø 6 mm, complete
What is this article?
Cock plugs, PTFE, retaining device of PP, for joint 21.5, bore Ø 6 mm, complete is the article on this page. Luminix Health distributes Bohlender 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.