40 mm silicone stopper
Stoppers are used in pretty much every industry, and their main function is to plug and seal holes so that there is a barrier between two spaces. They can be used to seal a container, or they can just protect the devices and equipment from any unwanted environmental effects. The 40 mm silicone stopper is a device that is used to plug holes with 40-millimeter openings, and they are the best choice if you want to use something that will not only provide protection but will also not affect the items that are placed in the container. They can be used for items like salt and pepper shakers, but they can also be utilized in the automotive industry as well. They are used in laboratories and they protect chemicals and other items from spilling or getting contained.
The 40 mm silicone stopper is extremely easy to install and most of the items have a flange on them to provide a better grip and to prevent any accidental removal. Note that the products that we manufacture will not get damaged and will not lose their shape even if you use them constantly, and even if you take them in and out daily. Silicone is an easily bendable material, but it also keeps its shape once it’s placed in the opening. Make sure that the 40 mm silicone stopper is the right size for your needs, and if you have any questions or concerns, you can always reach out to us and we will help you choose the best diameter for your container or opening. These units are also really easy to maintain and clean, and they will not get damaged if they come in contact with water, moisture, dust, and debris. We offer them in a variety of colors, and you can even customize the dimensions and the type of stopper you need.
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
- Material
- Silicone. Specify the compound grade for the selected service.
- Application focus
- Laboratory vessels. Size the part against the selected assembly.
- Dimensions to confirm
- Opening diameter, closure profile, insertion depth and exposed grip. Match these to laboratory vessels.
- Nominal size reference
- 40 mm. Identify what each nominal value measures and confirm all mating dimensions and tolerances.
- Contact conditions
- Water: 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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