Description
BOLA screw closure caps, GL 14 PTFE are laboratory screw caps made entirely from polytetrafluoroethylene (PTFE) for GL 14 threaded connections. A knurled outer surface gives a firm, secure grip when opening or closing vessels, supporting confident handling in routine and specialised laboratory work. By design, once the cap is screwed on, the medium contacts only PTFE, so no secondary materials enter the wetted path. This pure PTFE contact surface is valued where chemical inertness and broad media compatibility are required on glassware and apparatus with standard GL threads. The caps are offered as a single piece with a net weight of 0,006 kg and are intended for GL 14 threads. Produced by manufacturer Bohlender, they fit applications in analytical chemistry, sample handling, and process setups that rely on chemically robust closures. PTFE’s non-stick character and resistance profile make these knurled screw caps a practical choice for sealing vessels when only PTFE should touch the contents, helping maintain clean, consistent closure performance across everyday laboratory workflows.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Brand: BOLA
- Material: Polytetrafluoroethylene (PTFE)
- Thread: GL 14
- Design: Knurled grip
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Questions about BOLA Screw Caps, GL 14 PTFE
What is this article?
BOLA Screw Caps, GL 14 PTFE is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
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 Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, 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. 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.