Description
BOLA screw caps GL 14 without bore are black laboratory closures fitted with an internal PTFE/silicone seal for reliable sealing on GL-threaded glassware and vessels. The knurled outer profile provides a secure grip during tightening and removal, while the integrated seal compensates for minor irregularities on the sealing face. Manufactured from PPS with a PTFE-facing seal design, the screwed-on cap ensures that the medium contacts only PTFE, supporting chemically demanding laboratory workflows. These solid caps without bore are intended for straightforward closure applications where no tubing or probe passage is required. Suitable for GL 14 threads, they form a practical sealing solution for sample bottles, reaction vessels and general lab containers. Each unit has a net weight of 0,004 kg and is supplied in packs of 10 pc(s) from manufacturer Bohlender. The combination of grippy knurling, PTFE-only media contact and a compliant PTFE/silicone gasket makes these BOLA screw caps a dependable choice for routine sealing tasks in analytical, preparative and research laboratories.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Brand: BOLA
- Thread: GL 14
- Design: without bore, black
- Seal: PTFE/silicone
- Cap material: PPS
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Questions about BOLA Screw Caps, GL 14 without bore, black, with PTFE-Silicone gasket, max. temp
What is this article?
BOLA Screw Caps, GL 14 without bore, black, with PTFE-Silicone gasket, max. temp 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.

