Silicone bungs
Silicone bungs which you will come across also under the name of silicone stoppers, are something that is very useful and everyone who has ever tried to seal a bottle or been anything else where there is some liquid, knows it. Both rubber and silicone bungs are the best available option when you need to prevent gas or liquid from escaping bottle or some other object.
So you can find them in a variety of places, from the lab to the winery. Both rubber and silicone have a lot of similar characteristics, but if the bung should be in contact with food, for example, then silicone is used. Also, silicone is even more elastic, which means that it will even better prevent gas and liquids from escaping because it will fit perfectly in any hole. Silicone bungs are still often used in biology, food science, home brewing as well as for medical purposes, primarily in hospitals. Silicone is FDA approved for food contact.
In addition to being very effective for this purpose, silicone is also very durable and practically does not age. It is non-toxic and no harmful chemicals are used in the production of silicone bungs. Silicone bungs can withstand a huge temperature range, up to almost minus 100 and over 250 degrees Celsius, so there is almost no environment where there are not suitable. You will find silicone bungs of various sizes, and it is important that you choose the right one or otherwise silicone bungs may not fully fulfill their purpose. This is equally important, whether you use silicone bungs to seal a wine barrel or a chemical bottle. To make sure they will be tight fit, compare the diameters of the opening and silicone bungs. Although they are usually white, you can choose the color you want, so red is often used for labs.
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
- Bottle necks, brewing equipment and wine bottles. Size the part against the selected assembly.
- Dimensions to confirm
- Opening diameter, closure profile, insertion depth and exposed grip. Match these to bottle necks and brewing equipment.
- Contact conditions
- Other gases, food ingredients and wine: 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.
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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