Description
Seals for screw caps with hole are silicone rubber inserts designed for GL 32 screw caps and an opening diameter of Ø 15,0–17,0 mm. They equip perforated laboratory screw caps so tubing, probes or similar connections can enter bottles and vessels while the silicone maintains a seal around the passage. As silicone rubber parts they fit standard labware use with containers, bottles and related accessories in the seals and hose-connector segment. Pack size is 2 pc(s); unit weight is given as 0,001 kg. The GL 32 format corresponds to common laboratory bottle threads, and the 15,0–17,0 mm aperture suits matching tubing diameters for fluid handling, gas exchange or sampling arrangements. These seals from manufacturer DWK Life Sciences help keep vessels accessible through the cap without full opening. They are aimed at general laboratory bottle systems that already use holed GL 32 caps. Clear indication of thread class and hole diameter supports correct selection alongside existing caps, connectors and tubing in routine experimental and storage workflows.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 2 pc(s)
- Material: Silicone rubber
- Thread size: GL 32
- Hole diameter: Ø 15,0–17,0 mm
- Weight: 0,001 kg
- Product type: Seals for screw caps with hole
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Questions about Seals for screw caps with hole, Silicone rubber, GL 32, Ø 15.0-17.0 mm
What is this article?
Seals for screw caps with hole, Silicone rubber, GL 32, Ø 15.0-17.0 mm 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.

