Description
Silicone stopper is a sealing component for vacuum filtration units in both 47 mm and 90 mm formats, ensuring an airtight interface between funnel assemblies and receiving flasks or adapters under reduced pressure. The flexible silicone construction conforms to mating glassware necks, helping maintain vacuum integrity during membrane filtration, clarification, and sample concentration steps. Compatibility with 47 mm and 90 mm vacuum filtration units makes the stopper a versatile spare for mixed filtration benches that handle different membrane diameters. Packed as 6 pc(s) and weighing 0,160 kg for the set, it supports routine replacement of worn seals without interrupting laboratory workflows. This silicone stopper from manufacturer DWK Life Sciences is intended for research, quality-control, and teaching laboratories that rely on vacuum filtration devices and filter holders. Reliable sealing at the stopper interface reduces vacuum loss and improves handling consistency when processing aqueous or solvent-based samples. A practical consumable accessory for maintaining leak-tight connections across common laboratory filtration formats.
This article is part of Bottle-top & vacuum filtration units, in Filtration.
Key features
- Pack size: 6 pc(s)
- Product type: Silicone stopper
- Material: Silicone
- Compatibility: 47 mm and 90 mm vacuum filtration units
- Weight: 0,160 kg
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Questions about Silicone stopper, for 47mm and 90mm vacuum filtration unit, 6 unit(s)
What is this article?
Silicone stopper, for 47mm and 90mm vacuum filtration unit, 6 unit(s) is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Bottle-top & vacuum filtration units, inside Filtration, in Lab consumables.
A bottle-top filter or a vacuum filtration unit sits on a bottle and pulls a liquid through a membrane under vacuum. Pore size and membrane are the same choice as a syringe filter, at a larger area. A sterile unit is a stated claim. The bottle neck has to match.
Filtration holds back what is larger than the pores and lets the rest through. Paper is the ordinary laboratory filter. A membrane has a stated pore size and a polymer that must survive the solvent. A syringe filter is that membrane in a housing on a syringe. Glass fibre takes a higher dirt load. Ultrafiltration holds back macromolecules and passes salts. The pore size, the chemical compatibility and the volume are the three choices. Laboratory apparatus around filtration is indexed under ISO laboratory apparatus.
Which category should I open next?
The category is Filtration. The sub-category is Bottle-top & vacuum filtration units. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Membrane filters, Glass & quartz fibre filters, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
What should I check before I order?
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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.
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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.