Rubber grommet stopper
When equipping your new laboratory, or just renewing your old one, you have to make sure that you have everything you will ever need. Nobody forgets about the glassware, the metal stands, and the measuring units. However, when it comes to smaller objects, you have to make sure that you have got them as well. Having to use circular systems of glass objects connected whether for distillation purposes or something else, it cannot be done without the rubber grommet stopper. There is no point in compromising the results of the examinations you perform because of the lack of small equipment like the rubber grommets.
The rubber grommet stopper comes in three variants. The first one is completely closed, and it is used to seal the glass-made objects. The second variant is the grommet with one hole that lets you precisely measure certain parameters during the experiment. That way, you will have a better-controlled examination, knowing the right temperature and pH on every time interval that is important for you. The third variant is the one with two holes, and it is supposed to have one medium come inside from the first hole, and the second medium to go out through the second hole. That way, there is a complete circle.
Because these grommets are completely made out of rubber, we can achieve the sealing effects. We can produce grommets from various types of rubber so they can suit your situation better. However, to let the grommets be effective, you will have to get the right-sized ones. Before you order, make sure that you measure the necks of any equipment that you might want to seal later on. After that, find the size on our list, and you should be good to go. In case you are not able to find the correct size, we can manufacture a special-sized rubber grommet stopper for you.
Our Butyl Stoppers Size Chart
Bottle Stopper Size Catalog
Compare the listed butyl stopper dimensions against the bottle opening and seating arrangement. Confirm the selected profile using the part drawing.
Butyl Rubber Stopper(Anaerobic bottle stopper)
Compare A, B, C, D and E in mm against the selected stopper drawing. The illustration shows a related profile; confirm the precise underside and fit before specifying the part.

Need a different size? Share your drawing, mating dimensions and intended use to discuss a suitable part.
Discuss Your RequirementsProduct specifications
- Product form
- Removable closure fitted inside an opening
- 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.
- Profiles discussed
- Round profiles. Select the profile that matches the mating part and dimension that section explicitly.
- 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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