Rubber blanking plug
Industrial equipment used in manufacturing industries and various other industries is often riddled with holes. These holes can be residues of previous wiring holes that are defunct now, or they can result from the side effects of extensive drilling operations in the machine’s metallic sheet. Whatever the cause may be, these holes don’t really look good and can be significant eyesores.
That’s why industrial managers and heads are often looking for ways to seal off these holes to provide better touches for their machines and improve their beauty. These holes can also attract dust and debris from everywhere, which can settle down in the devices and clog them. Thus, not only do these holes cause damage to your reputation as a company but also bring down your production value and supply line. This can cause delays for your whole factory – just because of your machine stopping.
The best way to avoid this is by buying a rubber blanking plug. A rubber blanking plug can fill the holes of any metal sheet in this world, may it be from an industrial machine or the holes in the metallic panel of your house. A rubber blanking plug acts as a seal that can be easily inserted into the recesses of a machine if needed. While it may not sound much for their function, the value and utility of a rubber blanking plug are unparalleled.
A rubber blanking plug can provide a finishing look to your machines in the place of your holes which looks neat and clean. They are straightforward to install and extract; even an average consumer with no experience with seals can easily use them. One of the most incredible things about a rubber blanking plug is that it is really inexpensive and cost-effective, considering the value they provide. A rubber blanking plug can fit a hole of any size in a metal sheet, provided it’s the right size.
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
- Blanking insert for an unused panel opening
- Application focus
- Metal-panel openings. Size the part against the selected assembly.
- Dimensions to confirm
- Opening profile, panel thickness, retaining groove and head overlap. Match these to metal-panel openings.
- Exposure to evaluate
- 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.
- Opening condition
- For unused wiring or drilled panel holes, record cut-edge condition and remove interference at the retaining contact before trial fitting.
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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