Description
Stoppers made of silicone rubber with a 3 mm diameter hole are laboratory plugs sized 10,5 x 14,5 x 20 mm for sealing vessels while allowing controlled passage through the centre bore. The through-hole supports tubing, probes or simple venting arrangements commonly required in sample preparation, reaction setups and temporary closures on glassware. Silicone rubber provides a soft, elastic seal that conforms to neck openings and helps maintain a snug fit during routine handling. This variant is offered as a pack of 25 pc(s) from manufacturer ROTH SELECTION, giving laboratories a convenient stock quantity for multi-user benches or teaching environments. The defined outer dimensions and 3 mm hole make the stoppers suitable for standardised vessel necks where a soft plug with a central opening is preferred over solid closures. Pack weight is 0,065 kg, so the set remains easy to store with other labware consumables. These silicone stoppers belong to the stoppers-and-clamps range used with laboratory glass, vessels and related consumables, supporting everyday sealing, tubing feed-through and temporary protection of open vessels in research, quality control and educational laboratories without rigid fittings.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 25 pc(s)
- Product type: Stoppers with hole
- Material: Silicone rubber
- Hole diameter: 3 mm
- Dimensions: 10,5 x 14,5 x 20 mm
- Weight: 0,065 kg
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Stoppers made of silicone rubber, Ø Hole 3 mm, 10.5 x 14.5 x 20 mm, 25 unit(s)
What is this article?
Stoppers made of silicone rubber, Ø Hole 3 mm, 10.5 x 14.5 x 20 mm, 25 unit(s) is the article on this page. Luminix Health distributes Carl Roth 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?
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.