Description
Seal for screw caps with hole is a silicone rubber sealing insert for laboratory screw-cap systems with a central aperture. Sized for GL 14 threads and an opening diameter of 5,5–6,5 mm, it supports tight closure around probes, tubing or similar inserts while maintaining chemical and thermal resilience typical of silicone elastomers. The seal fits screw caps that require a pierced septum-style interface for sampling, gas inlet or sensor access without fully opening the vessel. Supplied as a single unit with a weight of 0,003 kg, this accessory from manufacturer Lenz is intended for bottles, flasks and related containers used in routine laboratory handling. Soft silicone construction aids seating against the cap and insert surface, helping limit leakage during storage, mixing or mild process conditions. Choose this GL 14 variant when matching existing screw-thread glassware and when the insert diameter falls within the 5,5–6,5 mm range for secure, reusable sealing in analytical and preparative workflows.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Seal for screw caps with hole
- Material: Silicone rubber
- Thread size: GL 14
- Opening diameter: Ø 5,5–6,5 mm
- Weight: 0,003 kg
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Questions about Seal for screw caps with hole, Silicone rubber, GL 14, Ø 5.5-6.5 mm, 1 unit(s)
What is this article?
Seal for screw caps with hole, Silicone rubber, GL 14, Ø 5.5-6.5 mm, 1 unit(s) is the article on this page. Luminix Health distributes Lenz 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.