Description
Seal for screw caps with hole is a silicone rubber insert for GL 18 screw caps fitted with a larger central aperture. The opening diameter of 7,5–9,0 mm suits thicker tubing, probes or connectors that need a flexible, chemically resistant seal against the cap. Silicone construction supports repeated seating and removal while helping reduce leakage around the feed-through during laboratory storage and mild process steps. Delivered as a single unit with a weight of 0,003 kg, the seal from manufacturer Lenz matches GL 18 threaded closures used on bottles, flasks and related vessels. It is appropriate for sampling lines, sensor ports and temporary fluid or gas connections where the insert diameter falls in the 7,5–9,0 mm range. Straightforward thread and diameter specification aids correct pairing with existing screw-cap systems. Use this component in analytical, preparative and general laboratory environments that require dependable elastomeric sealing for pierced GL 18 caps without unnecessary vessel opening.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc(s)
- Product type: Seal for screw caps with hole
- Material: Silicone rubber
- Thread size: GL 18
- Opening diameter: Ø 7,5–9,0 mm
- Weight: 0,003 kg
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Questions about Seal for screw caps with hole, Silicone rubber, GL 18, Ø 7.5-9.0 mm, 1 unit(s)
What is this article?
Seal for screw caps with hole, Silicone rubber, GL 18, Ø 7.5-9.0 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.