Copper Plugs | McMaster-Carr

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935 Products

Fluid Handling

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

79 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

9 products

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

9 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

78 products

Tubing Flow Stops

Temporarily block water flow to make soldering repairs without waiting for your line to drain

9 products

Heating Elements

Turn electrical current into heat

42 products

Electrical Power, Networking, and Controlling

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

139 products

Ballast Connectors

Avoid exposure to live wires when replacing fluorescent ballasts

2 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

55 products

RJ45 Plugs

Pair with sockets or receptacles to make Ethernet connections

4 products

Coaxial Plugs

Pair with sockets or receptacles to make coaxial connections

13 products

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

42 products

Molex Plug and Socket Sets

Come with wire leads installed for quick additions to existing Molex systems

26 products

Sure Seal Connectors

A PVC housing keeps out liquids and dust and resists chemicals

6 products

Han Connectors

Plugs and sockets to make Han connections

6 products

CB Radio Sockets

Pair with receptacles to connect CB radios

1 product

Micro 360 Connectors

Plugs and sockets to make control and data connections in tight spaces

20 products

Audio Receptacles

Install in walls and panels and pair with plugs to make audio connections

3 products

USB Sockets

Pair with plugs to make USB connections

5 products

Terminals

Attach wire endings everywhere from circuit breaker panels to batteries

17 products

Wire Taps

Connect a tap wire to a main wire without stripping

2 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

24 products

Ethernet Cords

Send data between computers, printers, servers, and switches

10 products

Electrical Connector Caps

Protect data connectors when not in use

1 product

Electrical Enclosure Vents

Attach to sealed enclosures so air can flow to equalize temperature and pressure

5 products

Jumper Cords

Ready to connect with a terminal at one or both ends

7 products

Battery Cords

Connect batteries to each other

24 products

Wire and Cable Crimpers

Crimp connectors onto electrical wire or cable

12 products

Wire and Cable Crimper Dies

Attach to cordless crimpers to secure connectors onto cable

33 products

Measuring and Inspecting

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

11 products

Test Lead Adapters

Change tip styles to take different measurements with the same test leads

2 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

10 products