Rubber stoppers with holes
In each laboratory, you can find a multitude of laboratory utensils, devices and tools that contribute to the proper performance of scientific experiments and obtaining results that can sometimes be of great importance. That is why it is important that each laboratory is equipped with basic accessories that will facilitate the work of the laboratory assistant. The rubber stopper is one of the tools that has practical use in the laboratory. It is a cylindrical attachment that is placed on the opening of a test tube, bottle, vial, glass, or other laboratory vessel.
They can be made of cork, but rubber stoppers are much more common, because their application is more practical. They provide a higher degree of sealing, and rubber is also a more chemically resistant material, so it is more suitable for this purpose. The main role of rubber stoppers is to prevent the spillage of liquid from the glassware during shaking, as well as to prevent the release of gas, which is important when performing the experiment. They can also prevent contamination with toxic gases that develop during these processes.
Rubber stoppers can be manufactured without holes, but rubber stoppers with holes are also used for various purposes. These two different types of rubber stoppers are used in different experiments. For example, rubber stoppers with holes are useful when it is necessary to insert a thermometer or other tools that are important during the experiment. By using rubber stoppers with holes, the thermometer will remain in place even after sealing the laboratory vessel in which it is placed. If rubber stoppers with holes are not available to you, you can drill the holes yourself with appropriate tools, such as a cork drill, and continue your experiment without interruption.
Stopper & Plug Size Catalog
Compare four stopper profiles and check the selected part dimensions against your opening and available depth. Each profile has its own drawing and dimension meanings.
Custom colors are available to your Pantone color code. Include the code in your inquiry.
RST T-Shaped Plugs
Match stem diameter A, flange diameter B, stem length C and flange thickness D. E refers to the underside recess; use the selected row and approved drawing to confirm the actual profile.
RSA Tapered Corks
Compare large-end diameter A, small-end diameter B and Height, in mm. The mating bore and required seating depth determine where the taper contacts the opening.
RSB Undercut Plugs
Compare neck diameter A, flange diameter B, flange-to-lip distance C and flange thickness D. Check panel thickness and rear clearance. E refers to the underside recess.
RSD T-Shaped Stoppers
Compare stem diameter A, flange diameter B, stem length C and head thickness D, in mm. Check the seating surface and available depth as well as the hole diameter.
Need a different fit? Share the opening dimensions, mating profile and intended use for a custom size.
Discuss Your RequirementsProduct specifications
- Product form
- Removable closure fitted inside an opening
- Application focus
- Laboratory vessels, test tubes, bottle necks and vials. Size the part against the selected assembly.
- Dimensions to confirm
- Opening diameter, closure profile, insertion depth and exposed grip. Match these to laboratory vessels and test tubes.
- Passage layout
- Dimension each bore, its location and the remaining wall; match it to the tube, probe or fitting passing through.
- Profiles discussed
- Cylindrical sections. Select the profile that matches the mating part and dimension that section explicitly.
- Contact conditions
- Other gases: define concentration, temperature and contact time, then check compatibility with the chosen compound.
- Seating check
- Check the sealing contact around the opening and the force needed for insertion and removal.
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