Description
Seal for screw caps with hole is a silicone rubber sealing insert intended for laboratory screw caps that incorporate a central aperture. Sized for GL 45 thread systems, it covers an outer diameter range of 25,0–27,0 mm and forms a flexible gasket between the bottle neck and the perforated cap. The elastomeric seal supports secure closure while leaving the opening free for tubing, sensors or sampling accessories commonly used in media bottles and reagent vessels. Supplied as 1 pc with a net weight of 0,001 kg, the component integrates readily into standard laboratory glass and plastic bottle setups that rely on GL 45 screw caps with holes. This accessory from manufacturer DWK Life Sciences is suited to research, quality-control and process environments where a durable silicone interface is required around the cap aperture. Typical applications include closed-system transfers, continuous feeding lines and probe insertion on bottles and canisters. Its silicone rubber construction provides the elasticity needed for repeated fitting and removal without compromising the seal around the hole, making it a practical consumable within laboratory glassware, vessel and hose-connector accessory ranges.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Silicone rubber
- Thread size: GL 45
- Diameter: Ø 25,0–27,0 mm
- Product type: Seal for screw caps with hole
- Weight: 0,001 kg
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Questions about Seal for screw caps with hole, Silicone rubber, GL 45, Ø 25.0-27.0 mm, 1 unit(s)
What is this article?
Seal for screw caps with hole, Silicone rubber, GL 45, Ø 25.0-27.0 mm, 1 unit(s) is the article on this page. Luminix Health distributes DWK Life Sciences 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.