Description
BOLA screw caps GL 45 without bore are closed laboratory screw closures made from thermoplastic polyester (PBTP) for GL-thread vessels and bottles. Each cap features a grippy knurled exterior for secure handling and an internal PTFE/silicone gasket that compensates for irregularities on the sealing face. Once fitted, the medium contacts only PTFE by design, supporting chemically resistant sealing in routine laboratory work. Suitable for GL 45 threads, these caps provide a solid, bore-free closure option for sample storage, reagent bottles and general labware. Supplied in a practical pack of three pieces with a net weight of 0,049 kg per unit, they integrate easily into standard glassware setups. The construction from Bohlender combines a durable polyester body with the PTFE-facing seal for reliable seating on matching GL necks. Ideal for laboratories that need straightforward, chemically inert screw closures without openings for tubing or probes, these BOLA caps offer a clean, repeatable seal on GL 45 equipment used in analytical, preparative and general chemistry workflows.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 3 pc(s)
- Brand: BOLA
- Thread: GL 45
- Design: Without bore
- Body material: Thermoplastic polyester (PBTP)
- Seal: Internal PTFE/silicone gasket
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Questions about BOLA Screw Caps, GL 45 made of PBTP, without bore
What is this article?
BOLA Screw Caps, GL 45 made of PBTP, without bore 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.