Description
Replacement cap GLS 80 with PTFE liner is a screw closure intended for laboratory vessels and bottles that use the GLS 80 thread standard. The cap is fitted with a polytetrafluoroethylene (PTFE) liner, providing a chemically resistant sealing surface suitable for routine laboratory handling of a broad range of media. Classified as a screw-type closure, it serves as a practical spare part within the family of laboratory closure caps, aluminium caps and crimp-style fittings. Supplied as a single piece with a net weight of 0,035 kg, the component integrates directly onto matching GLS 80 glassware without additional adapters. Its PTFE insert supports reliable sealing performance during storage, transfer or reaction work where a secure threaded connection is required. Produced in Germany and available from manufacturer Rettberg, this replacement cap helps maintain existing laboratory setups and ensures continuity of sealing integrity on vessels already equipped with the GLS 80 interface. The straightforward design makes it a convenient maintenance item for research, quality-control and process laboratories that rely on standardised threaded closures.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Thread: GLS 80
- Material: Polytetrafluoroethylene (PTFE)
- Product type: Screw cap
- Country of origin: Germany
- Technical Information Sheet:
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Questions about Spare cap GLS 80 with PTFE-insole
What is this article?
Spare cap GLS 80 with PTFE-insole 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. 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.