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RUBBER & SILICONEStandard parts. Custom solutions.

Oval Rubber Plug

Oval Rubber Plug

As you might already know, there are a lot of different uses for rubber plugs, especially for oval rubber plugs. An oval rubber plug can come in various sizes, even slight variations in shapes. What you may not realize is that there are a number of these rubber plugs all around you. There could be a few inside your home, your office, your automobile and so on. These products are very versatile, so it should come as a no surprise they are so present everywhere around us.

Oval rubber plugs are affordable, but very durable, flexible, wear and tear resistant and so much more. As you can tell by the name, one of the main purposes and properties of this product is insulation and protection. An oval rubber plug can be made from various materials, but most often, those are natural rubber, EPMD, neoprene, FKM, silicone etc. Each of these materials is slightly different from another. For instance, silicone is much more aesthetically pleasing option if you have an oval hole in a highly visible spot that you want to close. Furthermore, you can tell from the materials that are used, an oval rubber plug can withstand varying degrees of hot and cold temperatures. An oval rubber plug could withstand temperatures from -40 degrees Celsius all the way up to 230 degrees Celsius. Furthermore, an oval rubber plug will also offer protection from dust and water.

Finally, the application and usage of oval rubber plugs are very easy. Since oval rubber plugs come in different shapes and sizes and can even be custom made according to clients designs, they can be easily inserted into any opening and close it off. Afterwards, based on the wiring you need to be protected and insulated, you can cut matching holes in the appropriate (middle) section of the oval rubber plug.

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 options discussed
Silicone, chloroprene rubber (CR), FKM and natural rubber / latex. Choose one formulation for the actual contact and loading conditions.
Dimensions to confirm
Major and minor axes, wall or section thickness and the installed depth or length.
Profiles discussed
Oval profiles. Select the profile that matches the mating part and dimension that section explicitly.
Contact conditions
Water: define concentration, temperature and contact time, then check compatibility with the chosen compound.
Exposure to evaluate
Heat and cold cycling and dust or debris. 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.

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