Large rubber stoppers
Chemical industries and labs always face the risk of chemical spillage and cause unwanted, permanent damage. This is the worst-case scenario possible for a chemical technician and those who work in scientific environments. A significant cause of this chemical spillage is often from test tubes or beakers that were left open and unattended. That’s why many scientists prefer to use rubber stoppers in this scenario to protect their chemical storage equipment from extensive damage.
However, rubber stoppers come in various sizes. The test tube, which might be a perfect fit for a rubber stopper, may not be as good enough to fit other rubber stoppers. Often more than not, it’s the large beakers and glass flasks that get left open because there are simply no rubber stoppers to cover their large size. This should never happen as open beakers with chemicals inside them are a dangerous hazard for their surroundings.
That’s why in such cases, large rubber stoppers are the wisest option to choose. Large rubber stoppers do the job that other normal stoppers can’t do – being able to fit large beakers and flasks. Large rubber stoppers are a necessary component to have in every chemical and scientific lab, just like standard rubber stoppers. Large rubber stoppers also have very high heat resistance and can survive up to 100 degrees Celsius of temperature and more. Once you get some large rubber stoppers for yourself, you won’t ever have to worry about your beakers getting leaked or spilling over. Large rubber stoppers are a perfect match for them and will fit tightly in them to make a liquid-tight seal that is only openable by your or your colleagues. Large rubber stoppers also come with holes, so that’s something you should consider if you want to insert equipment like thermometers in your beaker or flask.
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
- Test tubes and laboratory flasks. Size the part against the selected assembly.
- Dimensions to confirm
- Opening diameter, closure profile, insertion depth and exposed grip. Match these to test tubes and laboratory flasks.
- Installation envelope
- Define the full mating outline and the handling clearance; confirm local support and compression across the larger area.
- Seating check
- Check the sealing contact around the opening and the force needed for insertion and removal.
Need a quote or a custom part?
Send your requirements, drawings or samples to discuss standard and custom silicone rubber parts.
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