Skip to content
RUBBER & SILICONEStandard parts. Custom solutions.

Rubber Stopper Sizes Chart

Rubber Stopper Sizes Chart

Rubber stoppers are being used in numerous quantities every day, since they are considered to be an irreplaceable segment of numerous industries, such as chemical and medical. Having that mentioned, we can say that their appliance is omnipresent, since they affect numerous aspects of our daily lives either directly or indirectly, depending on the specific application. What one needs to worry about when finding the adequate size for their demands is how to determine which size they would be satisfied. Compare the dimensions in the rubber stopper product tables with your opening size, insertion depth and required fit. Apart from consulting rubber stopper sizes chart, one should be aware that there are manufacturers who offer customized rubber stoppers and would make an exception if the amount one needs is worthy of their time. The last thing you would want to do is order a batch of rubber stoppers that would not fit your needs, therefore, always make sure you have covered all the details about the shape and size you need. Since there are so many manufacturers producing rubber stoppers, it comes as no surprise there are so many different sizes and shapes offered by different companies on a global scale. Rubber stopper sizes can vary between manufacturers. Compare the listed dimensions with your assembly before choosing a part. On the other hand, consulting a rubber stopper sizes chart can help you find particular models for a custom-made container you were struggling to find an adequate stopper. If you are having trouble finding out which type of a stopper you need, either measure the container on your own or try to find information about the size imprinted on its surface. 

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
Dimensions to confirm
Opening diameter, closure profile, insertion depth and exposed grip.
Size selection
Choose the drawing or chart row by its functional dimensions and units; verify mating-part tolerances before ordering.
Seating check
Check the sealing contact around the opening and the force needed for insertion and removal.
Chart mapping
Record the container opening alongside the selected stopper chart row, including top diameter, bottom diameter and height in the same units.

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)