Concave Bottom Cup-Type Expansion Plugs seal by pressure exerted by the concave bottom against the walls of the plug. They are made standard from Carbon Steel and are available in 24 sizes, ranging from 3/8" - 3" in Nominal Diameter. (Brass, Aluminum and Galvanized Steel are also available. Please contact EFC International directly for information).

New and popular Hole Plugs are continually being developed to meet our customers' special applications. With a fax of your print and/or details of your application, we will be pleased to recommend a Standard or Special Hole Plug appropriate for your application.

New and popular Hole Plugs are continually being developed to meet our customers' special applications. With a fax of your print and/or details of your application, we will be pleased to recommend a Standard or Special Hole Plug appropriate for your application.

Standard Nylon Assembled Tube Closures

Square Metal Tube Closures provide an easy fit into square-shaped tubes. We offer them in three styles: Decorative Beveled Cap with 8 prongs; Flat Cap with 4 prongs, and a Heavy Duty Assembled version. All parts are Heat Treated, with many Material and Finish options.

These Standard Metal Plug Buttons will close holes ranging from 13/32" to 1-1/8" in diameter (10.30 to 28.60 mm). They are designed to be easily snapped into place by hand, and the expanding spring action of their prongs holds them securely while providing easy removal whenever desired.

These Standard Metal Plug Buttons will close holes ranging from 3/16" to 25/64" in diameter (4.80 to 9.90mm). They are designed to be easily snapped into place by hand, and the expanding spring action of their prongs holds them securely while providing easy removal whenever desired.

Ventilator, Drain, and Screen-Type Plug Buttons have ventilation holes and are designed so they may be quickly and easily snapped into place by hand.

These Standard Metal Plug Buttons will close holes ranging from 1-1/4" to 3" inches (31.80 to 76.20mm). They are designed to be easily snapped into place by hand, and the expanding spring action of their prongs holds them securely while providing easy removal whenever desired.

Round Metal Tube Closures provide an easy fit for round tubes. They are available in a variety of styles and finishes to meet your application needs. Round Tube Closures for hard-to-fit tubes may be found on this website by typing "Reversed Prong Hole Plugs" in the search box at the top of this page. For additional styles, in sizes or finishes not found here, please contact an EFC Representative.

Reversed Prong Tube Closures have superior retention strength due to the turned-back design of their prongs. They are available to fit Round or Square tubes, in various sizes, and provide an easy solution to closing holes at the end of hard-to-fit tubes.

Flat Bottom Cup Type Expansion Plugs seal by compression of their tapered walls against the core hole. They are made standard from Carbon Steel and are available in 12 sizes, ranging from 3/8" - 3" in Nominal Diameter.