Description
Silicone stopper, upper Ø 44,0 mm, lower Ø 36,0 mm, length 40 mm is a transparent, flexible silicone stopper sized for larger laboratory vessel necks. Upper diameter is 44,0 mm, lower diameter 36,0 mm and length 40 mm, so the taper seats firmly in openings that fall within this range. The silicone material remains pliable for comfortable handling while holding its shape as a solid closure. This format from manufacturer Witeg complements other stopper types—norm, cork, rubber, silicone and cellulose—commonly stocked for general lab sealing tasks. Net weight is 0,055 kg and gross weight is 0,055 kg per piece. Packaging is 5 pc(s) per unit, suited to benches that require a small set of larger-diameter silicone stoppers for flasks, wide-neck bottles or similar apparatus. Explicit upper, lower and length values in the product identity help laboratories select the correct size against existing glassware inventories and maintain consistent sealing practice across experiments and sample storage.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Material: Silicone
- Upper diameter: 44,0 mm
- Lower diameter: 36,0 mm
- Length: 40 mm
- Appearance: Transparent, flexible
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Questions about Silicone plug O-Ø 44.0mm U-Ø 36.0mm length 40mm
What is this article?
Silicone plug O-Ø 44.0mm U-Ø 36.0mm length 40mm is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
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 Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass stoppers, Lids & seals and Closures (other).
What should I check before I order?
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.