Rubber Stopper Plugs
The industry that is the most dependent on rubber stopper plugs is most definitely the medical industry. Medical professionals working in a hospital, research centres or laboratories work with various liquids that need to be safely stored in vials or test tubes for testing or any other kind of procedure. Whether it is blood samples they are working with or developing some new drug or medicine, they can’t risk spilling or damaging their samples and that is where rubber stopper plugs come into play.
Rubber stopper plugs can be used for almost any kind of laboratory used glassware, but that’s hardly the extent of their use. However, it is arguably their primary one. Rubber stopper plugs are, as you can tell from the name, made from rubber. This is what allows them to perform great in various conditions. Rubber is one of the most resilient materials we can work with and that is exactly what medical professionals need. They can withstand a wide range of temperatures, from extremely low ones to very high ones, which is very important when you work in a medical facility. Also, rubber is naturally very resilient to various chemicals, so you don’t have to worry about it reacting with various samples.
Arguably, the most important thing is that they offer substantial insulating properties. When you plug a vial or a test tube with a rubber stopper plug, you can be certain that nothing will come out of it, nor will anything manage to get in. You get amazing protection from dust, moisture or any other thing that might corrupt the sample you are working with.
Finally, rubber stopper plugs can come in various shapes, sizes and can even be made from different materials and dyed in different colours, which can also be very useful in a laboratory setting, for easier differentiation of samples.
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, vials and test tubes. 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 vials.
- Contact conditions
- Blood or sample fluids and medicinal contents: define concentration, temperature and contact time, then check compatibility with the chosen compound.
- Exposure to evaluate
- Moisture and dust or debris. Validate the selected material under the combined conditions.
- 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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