Plastic Plugs

Caps'n Plugs offers a wide array of unique plastic plugs for a variety of applications. Whether the job requires a plastic plug with a particular flange size for extra protection or a specific tab added to help when removing from hard to reach areas, our line of plastic plugs has a solution for any possible use.

Tapered Series

Tapered Series

Side-Tab Pull Plugs

Side-Tab Pull Plugs

Centre-Tab Pull Plugs

Centre-Tab Pull Plugs

Wide-Flange WF Series

Wide-Flange WF Series

Extra-Wide Extra-Thick Flange WWX Series

Extra-Wide Extra-Thick Flange WWX Series

Packaging Tube Plugs PTP Series

Packaging Tube Plugs PTP Series

Thin-Wall Tubing Plugs Type L and M CT Series

Thin-Wall Tubing Plugs Type L and M CT Series

Thin-Wall Tubing Plugs Type K OT Series

Thin-Wall Tubing Plugs Type K OT Series

Electrical Connector Plugs E Series

Electrical Connector Plugs E Series

Flush Style SI Series

Flush Style SI Series

Recessed Style SI Series

Recessed Style SI Series

Dome Plugs DOP Series

Dome Plugs DOP Series

Round Tubing Plugs C-U Series

Round Tubing Plugs C-U Series

Square Tubing Plugs T-U Series

Square Tubing Plugs T-U Series

Rectangular Tubing Plugs RC Series

Rectangular Tubing Plugs RC Series

Sheet Metal Grommets GRO SERIES

Sheet Metal Grommets GRO SERIES

Core Plugs CP Series

Core Plugs CP Series


Tapered Series

Able to serve as both a cap and plug, these low-density polyethylene plastic plugs are tapered so they can plug inner diameters or cover various outside diameters.

Wide-Flange WF Series

Able to serve as both a cap and plug, these versatile plastic plugs are designed with a wide and more sturdy flange, giving the polyethylene part increased protection and security upon application.

Extra-Wide Extra-Thick Flange WWX Series

Able to serve as both a cap or plug, these enlarged plastic plugs prevent mating components from being installed without first removing the low-density polyethylene cap. Available in 13 different sizes.

Side-Tab Pull Plugs

These tapered plastic plugs come equipped with a side-tab that serves as a handle for easy implementation or removal from various threaded or non-threaded fittings. Commonly used in hard-to-reach locations.

Centre-Tab Pull Plugs

Our tapered plastic plugs are designed with sturdy centre pull-tabs, allowing for easy application and removal from a variety of threaded and unthreaded ports, making them ideal for o-ring application.

Electrical Connector Plugs MS Series

These unique polyethylene plastic plugs are ideal for preventing dust or moisture from affecting vital electrical connectors and come with a heightened flange end for easy application and removal.

Packaging Tube Plugs PTP Series

Typically used in packaging or mailing tubes, these common plastic plugs are designed with finger pull-tabs for easy removal and provide a secure fit in any capacity.

Thin-Wall Tubing Plugs TYPE L and M CT Series

Looking to plug Type L and M-Style tubing? These specially-designed plastic plugs offer advanced protection for the configuration of flexible tubes, due to their reinforced-cross braces and tapered body.

Thin-Wall Tubing Plugs Type K OT Series

Looking to plug Type K-style tubing? These polyethylene plastic plugs are specifically fitted with a tapered body and reinforced-cross braces to keep the tube end protected.

Unified Plugs PZ Series

Able to be used as both a plug or cap, these plastic plugs are specifically engineered with a thick and heavy-duty flange for added security, making them ideal for protecting hydraulic and air-hose fittings.

Electrical Connector Plugs E Series

Designed to protect numerous threaded and unthreaded applications, these versatile plastic plugs are straight-sided and have a flanged end for easy removal from hard to reach places.

NPT Plugs EZ Series

Able to be used as both a plug or cap, these heavy duty plastic plugs are designed with an outer-body taper and flange for easy application and removal, while also offering a flush fit to prevent contamination.