Description
Screw cap GL 14 with an inner diameter of approximately 1,6 mm is intended for hose and tube feed-through applications in laboratory setups. Manufactured from polybutylene terephthalate (PBT) and fitted with a PTFE inner part, the cap provides a chemically resistant sealing interface for tubing connections. The GL 14 thread ensures compatibility with corresponding glassware and apparatus necks commonly used in chemical and analytical work. With a net weight of only 0,006 kg, the component remains lightweight while maintaining dimensional stability under typical laboratory conditions. This screw closure from manufacturer Rettberg is supplied as a single piece and is produced in Germany. It supports secure passage of hoses or tubes through GL 14 ports, helping maintain system integrity during vacuum, inert-gas or liquid-transfer operations. The combination of PBT body and PTFE insert offers a practical solution for feed-through sealing where chemical resistance and reliable thread engagement are essential.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Screw closure
- Thread: GL 14
- Inner diameter: 1,6 mm
- Material: Polybutylene terephthalate (PBT)
- Inner part: PTFE
- Technical Information Sheet:
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Questions about Screw cap GL 14, inner Ø 1,6 mm for tube feed-through, of PBT
What is this article?
Screw cap GL 14, inner Ø 1,6 mm for tube feed-through, of PBT is the article on this page. Luminix Health distributes Rettberg 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. Delivery across Europe, two to five days when in stock. 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.