Skip to content
RUBBER & SILICONEStandard parts. Custom solutions.

1/2 silicone stopper

1/2 silicone stopper

If you need a product to prevent fluids from escaping a container with the diameter of 1/2″, then we have just the product for you. We make stoppers that can be used on any container or bottle and prevent fluids and oils from escaping. As such, our 1/2″ silicone stopper is a must-have household item. The versatility of stoppers in modern life cannot be underestimated. No one can predict when you’ll need one. But once you do, rest assured that we’re here to cover all of your needs.

Since our bottle stoppers are made from silicone, do know that you’re getting a product that is not only functional but highly durable. Silicone is one of the most durable materials out there. It is used across hundreds of industries and is very effective in stopping fluids from escaping a container. As such, our 1/2″ silicone stopper is the right product for your needs. If you need a stopper to prevent fluids from escaping, then this is the product for you. Regardless of whether it’s a bottle or a container with an opening of half an inch, this product is the right choice for the job.

In addition to all that, silicone is also a material with high thermal properties.  This adds another dimension to the item – since you can put it in the sun or the freezer and it won’t be caused by the excess cold or heat.

We make silicone stoppers in all sizes, not just 1/2″ silicone stoppers. Since chances are you might require a different size of stopper, our website has all the information you need to make the right purchasing decision. If you have any questions regarding this or any other product, don’t hesitate to contact us. We are more than eager to assist you and more than happy to lend a helping hand.

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.

Dimension guide
T-shaped stopper — original A, B, C, D and E dimensions
A recessed RST variant is illustrated. The head remains closed. Check E and the approved section for the selected part.
Product appearance
Rubber Silicone Plugs(T-shaped-RST) — product view
Illustrative product rendering. Refer to the selected part drawing and table for dimensions.
PartNo.A(mm)B(mm)C(mm)D(mm)E(mm)
RST2.5-5.5-5.32.55.55.320
RST2.7-5.5-52.75.5520
RST3-4.3-4.534.34.50.80
RST3-7-73772.20
RST3.3-6.5-63.36.561.50
RST3.5-6.5-63.56.5620
RST3.8-7-10.53.8710.51.50
RST3.8-7-73.8771.50
RST3.8-7-63.8761.50
RST4-7.5-647.5620
RST4-9.5-749.572.50
RST4.3-8-64.3861.50
RST4.5-7.5-64.57.5620
RST4.8-6.8-3.64.86.83.60.90
RST4.8-9-74.8971.50

Need a different fit? Share the opening dimensions, mating profile and intended use for a custom size.

Discuss Your Requirements

Product specifications

Product form
Removable closure fitted inside an opening
Material
Silicone. Specify the compound grade for the selected service.
Application focus
Bottle necks. Size the part against the selected assembly.
Dimensions to confirm
Opening diameter, closure profile, insertion depth and exposed grip. Match these to bottle necks.
Contact conditions
Lubricating oil: define concentration, temperature and contact time, then check compatibility with the chosen compound.
Exposure to evaluate
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.

Contact Us Now!

Email us[email protected]

Ready to Find Your Rubber Part?

Send your requirements or drawing to discuss materials, dimensions and custom parts.

Request a Quote

Request a Quote

Tell us about your part, including dimensions, material, quantity, application and any special requirements. Attach a drawing if available to help us prepare your quote.

Contact Our Team

Prefer email? Contact us at [email protected]

Attach a drawing (optional)