Description
BOLA screw connection caps GL 32 are black PPS screw caps fitted with a central bore of 20,0 mm diameter for use on GL-threaded laboratory glassware and connectors. Each cap features a grip knurling around the exterior that improves handling when the fitting is tightened or released by hand. The through-bore permits tubing or other laboratory accessories to pass through a sealed GL 32 connection while the knurled body remains easy to operate. Rated for a maximum temperature of +250 °C, the PPS construction supports elevated-temperature laboratory work. These components arrive in a pack of 5 pieces with a net weight of 0,01611 kg. Produced in Germany, the caps belong to the BOLA programme from manufacturer Bohlender and address everyday connection tasks in chemical, analytical and process laboratories. The defined 20,0 mm bore supports feed-through assemblies on bottles, reactors and adapters that share the GL 32 thread standard. Their compact black profile integrates cleanly into existing glassware setups, offering a straightforward mechanical interface for tubing and probe passages.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Thread: GL 32
- Bore diameter: 20,0 mm
- Colour: black
- Material: PPS
- Maximum temperature: +250 °C
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Questions about BOLA Screw Caps with Aperture, GL 32, Ø 20 mm black, max. temperature +250°C
What is this article?
BOLA Screw Caps with Aperture, GL 32, Ø 20 mm black, max. temperature +250°C 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.
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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.