Plugs & InsertsSilicone Flange Plugs

Recommended for applications requiring a grounding area mask. Tapered, hollow design allows for easy insertion into threaded or non-threaded holes.

Key Features

Extra High Temperature

Resist temperatures up to 600°F (316°C).

Powder Coating Applications

Specifically designed for powder coating and E-coating applications.


Withstand multiple passes through most coating processes.

No Risk of Contamination

Will not contaminate
paint line.

Custom Sizing

Custom sizes available with minimal tooling investment.

In Stock

In stock for immediate shipment.

Available in multiple sizes, these silicone rubber plugs will conform to a variety of inside diameter hole sizes to provide an air tight seal.  Choose a diameter slightly larger than the hole to mask. 

Manufactured in clear silicone rubber. View our material chart for specifications or compare with other high temperature resistant materials.

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Silicone Flange Plugs Diagram
Silicone Flange Plugs
Minor Outside Diameter "B"
Major Outside Diameter "C"
Plug Length "D"
Flange Diameter "A"
0.099 0.248 0.890 0.493
0.126 0.315 1.020 0.489
0.138 0.335 0.985 0.631
0.153 0.409 1.100 0.631
0.178 0.394 1.100 0.650
0.275 0.550 1.420 0.749
0.394 0.868 2.000 1.219
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