EPDM plugs are ideal for most plating and anodizing applications due to their excellent resistance to chemicals. The tapered design of these plugs allows one size to fit multiple ports while the flexible rubber material conforms to provide a tight seal.

Key Features

Chemical icon

Superior chemical resistance.

High temp icon

Withstand temperatures up to 475°F (246°C).

Economical

Low cost alternative to silicone plugs in some coating processes.

Paint icon

No risk of contamination to
paint line.

Length icon

Custom sizes available with minimal tooling investment.

Shipping icon

In stock for immediate shipment.

25 Sizes

With diameters ranging from less than 0.05 inches to over 1.25 inches and a tapered design that will protect virtually any size hole, StockCap is sure to have a EPDM rubber plug that will work in your application.

For the best fit, we recommend testing multiple sizes to see what works best in your application.

Color & Material Specs

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

EPDM Tapered Plugs Diagram

EPDM Tapered Plugs and Stoppers

Major Diameter “A” (in)Minor Diameter “B” (in)Plug Length “C” (in)
0.1000.0311.000
0.1250.0310.625
0.1250.0620.625
0.1870.0620.750
0.2000.0620.750
0.2500.1250.750
0.2500.1251.000
0.3440.1870.625
0.3440.1871.000
0.3750.1251.250
0.3750.2500.750
0.4370.2501.000
0.4720.3540.748
0.5000.1252.000
0.5000.3130.813
0.5940.4061.000
0.6560.5001.000
0.7500.5631.000
0.7810.6261.000
0.8120.6251.000
0.9380.7181.000
1.0240.7871.000
1.0630.9051.000
1.2601.0241.000
1.3381.0631.000