Barrel Plugs | McMaster-Carr

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617 Products

Barrel-Style DC Connectors

Made with industry standard barrel-style ends, these connectors carry DC power between electronic devices and power supplies.

Power Cords

AC to DC Adapter Cords

Plug these adapter cords into a standard outlet and they change AC voltage to DC voltage.

Detachable-Cord AC to DC Adapters

Couple these adapters with a cord that matches your outlet and length requirements to run DC-powered electronics.

Medical-Grade AC to DC Adapters

To run DC-powered lab and medical equipment from your outlet, add a power cord with the plug style and length you need. These adapters meet strict IEC, UL, or ANSI/AAMI standards for use with medical devices.

International AC to DC Adapter Cords

Swap the plug to match the outlet of the region you’re in instead of using separate cords for each country. These adapter cords convert AC voltage to power DC electronics.

AC to AC Adapter Cords

Power devices that require less than 120 volts AC.

DC to AC Adapter Cords

Plug these cords into a vehicle socket to charge devices that run on AC voltage.

Barrel-Style DC Power Cords

Carry DC power in or out of electronic devices with these cords. All have industry standard barrel-style connections, letting you power electronics from power supplies.

Barrel-Style DC Power Cord Splitters

Send DC power to multiple electronics from one source. With industry standard barrel-style connections, these splitters are compatible with many power supplies and other devices.

Drums

Drum Plugs

Install these plugs into drum holes using a drum-plug wrench.

Drum Plug Gaskets

Add a gasket or replace one that's worn out to ensure a tight seal.

Locking Fill Caps for Drums

Prevent tampering with the contents of your drum while allowing access for filling.

Drum Locks

Secure 30- and 55-gallon steel drums.

Tapered Plugs

Often used as laboratory stoppers, these rubber plugs have good impact and abrasion resistance. They’re tapered to fit a range of hole diameters.

Expandable Tapered Plugs

Place a plug into an opening and tighten the wing nut—the sides expand to create a seal in holes of varying diameters.

Miniature Tapered Plugs

Sized to fit small openings, these tiny plugs fit snugly but can be removed easily using the flange. Their tapered design fits a range of hole diameters.

Pull-Ring Tapered Plugs

Pull the two built-in rings to quickly remove these plugs. All are tapered to fit a range of hole diameters.

Corks

Lightweight and moisture resistant, these plugs are laboratory-grade 100% natural cork. They’re tapered to fit a range of hole diameters.

High-Temperature Tapered Plugs

Good for electroplating, paint baking, and powder-coating applications, these plugs withstand temperatures up to 570° F. All are tapered to fit a range of hole diameters.

Expandable High-Temperature Tapered Plugs

Place a plug into an opening and tighten the wing nut—the sides expand to create a seal in holes of varying diameters. Good for paint baking and powder-coating applications, these plugs withstand temperatures up to 450° F.

Miniature High-Temperature Tapered Plugs

Sized to fit small openings, these tiny plugs fit snugly but can be removed easily using the flange. They withstand temperatures up to 470° F, which makes them good for electroplating, paint baking, and powder-coating applications. All are tapered to fit a range of hole diameters.

Chemical-Resistant Tapered Plugs

These plugs have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing. Their tapered design fits a range of hole diameters.

Food Industry Tapered Plugs

Made of FDA listed materials, these plugs are suitable for food contact. They're tapered to fit a range of hole diameters.