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RUBBER & SILICONEStandard parts. Custom solutions.

Rubber blanking plug

Rubber blanking plug

A rubber blanking plug is a small unit utilized mostly in the automotive industry to seal cavities and provide protection against sharp edges that could damage the rest of the equipment. They are ideal for closing openings and they are the best solution when it comes to overcoming issues like rusting. The units can be easily installed in pretty much every device, and they just need to be pushed inside the cavity. There are also other ways to install them, and it all depends on the type of rubber blanking plug that you have purchased, but no matter which one you choose, you will not have to use any special tools or devices to help you with the plugging. These small units provide water and dust-proof solution for all industries and they will ensure that there won’t be any debris or moisture penetrating inside the device. When installing them there are two main things that you need to pay attention to – the size of the rubber blanking plug, ergo, the opening, and the way that you install them. 

We can offer you a lot of different sizes of these units, and you need to choose the dimensions depending on the opening that you want to seal. If the seal is too tight, the unit may get damaged or break, and if it is too loose, you risk debris and moisture from penetrating inside your equipment. If you need any assistance with the dimensions, you can reach out to us and we will provide the aid you need. When it comes to the installation process, you have to make sure that both the cavity and the rubber blanking plug are completely clean and dry so that you can create a tight seal that will not come loose because of moisture or dust particles. The rubber blanking plug comes in different colors, and if you cannot find what you are looking for, we can also create custom sizes or hues for your project. 

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.

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
Blanking insert for an unused panel opening
Application focus
Vehicle body openings. Size the part against the selected assembly.
Dimensions to confirm
Opening profile, panel thickness, retaining groove and head overlap. Match these to vehicle body openings.
Exposure to evaluate
Moisture and dust or debris. Validate the selected material under the combined conditions.
Panel engagement
Seat the head against the panel and check retention at the actual cut edge.

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