Description
Seal for screw caps with hole is a silicone rubber gasket designed for laboratory screw caps fitted with a central hole. Matched to GL 45 thread systems, it offers an outer diameter range of 31,0–33,0 mm and creates a reliable elastomeric interface between the vessel neck and the perforated cap. The seal maintains closure integrity while keeping the aperture available for tubing, probes or other laboratory connections used with media bottles and reagent containers. Delivered as 1 pc and weighing 0,001 kg, it fits standard glass and plastic laboratory bottles that employ GL 45 screw caps with holes. Produced by manufacturer DWK Life Sciences, the silicone rubber material supplies the flexibility expected in routine laboratory sealing tasks involving aqueous media and everyday solvents. Suitable for research, analytical and production settings, the component supports closed-system sampling, continuous transfer and sensor insertion. It belongs to the family of seals, hose connectors and bottle accessories used wherever a durable gasket around a cap opening is required on laboratory vessels and canisters.
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 31,0–33,0 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 31.0-33.0 mm, 1 unit(s)
What is this article?
Seal for screw caps with hole, Silicone rubber, GL 45, Ø 31.0-33.0 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.