1/8 silicone rubber stopper
Our company specializes in manufacturing and delivering a 1/8 silicone rubber stopper, a small plug that can be used for a wide range of applications and processes. For starters, when different industries have to seal various holes, smaller containers, tubers, flasks, as well as other containers, they can choose to use our 1/8 silicone rubber stopper, which will, in some way act as a cork, meaning that it can protect the substances, items, and components located underneath them. In most situations, people prefer to use our stopper for such purposes, mostly because they can provide a tight seal, but more importantly, they can resist various things.
No matter what industry you operate in – automotive, marine, military, industrial, construction – our 1/8 silicone rubber stopper will be suitable for creating a tight seal while at the same time, it will resist a wide range of things, including chemicals such as acids, oils, dirt, grime, Sun and UV light, as well as aging. Besides this, it will also resist extremely high and extremely low temperatures, which means that you will be capable of using it in both indoor and outdoor settings – which is one of the things that actually make it quite beneficial and cost-saving for all organizations that choose to utilize it.
Another important thing that we must mention about our 1/8 silicone rubber stopper is that it will prevent different liquids and gases from escaping the container and it will also prevent any contaminants from changing the taste, smell, or characteristics of the substance within them. Also, the 1/8 silicone rubber stopper in our selection will not be influenced by shaking and/or movements, which is exactly what makes it suitable for a wide range of industries. They come in various shapes, colors, and designs, which means that you will definitely be capable of finding what you are looking for.
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 flasks. Size the part against the selected assembly.
- Dimensions to confirm
- Opening diameter, closure profile, insertion depth and exposed grip. Match these to laboratory flasks.
- Contact conditions
- Acids, lubricating oil and other gases: define concentration, temperature and contact time, then check compatibility with the chosen compound.
- Exposure to evaluate
- Sunlight or UV, outdoor weather, dust or debris and oil splash. 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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