Copper Caps | McMaster-Carr

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Chromate Conversion Coated

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1,118 Products

Fluid Handling

Tube End Caps

Cover the ends of tube to keep out dirt and debris

78 products

Tube End Plugs

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

9 products

Tubing Flow Stops

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

9 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

110 products

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

25 products

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

2 products

Electrical Power, Networking, and Controlling

Wire Splices, Connectors, and Taps

Join wire and protect the connection

338 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

140 products

Coaxial Plugs

Pair with sockets or receptacles to make coaxial connections

13 products

CB Radio Sockets

Pair with receptacles to connect CB radios

1 product

USB Sockets

Pair with plugs to make USB connections

5 products

Sure Seal Connectors

A PVC housing keeps out liquids and dust and resists chemicals

6 products

Amphenol Plugs

Mate with a housing to attach wires to a circuit board

13 products

Power Connectors

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

47 products

Ballast Connectors

Avoid exposure to live wires when replacing fluorescent ballasts

2 products

RJ45 Plugs

Pair with sockets or receptacles to make Ethernet connections

7 products

Molex Connectors

Plugs, sockets, and housings for making Molex connections

30 products

Micro 360 Connectors

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

24 products

Metric Circular Connectors

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

22 products

Han Connectors

Plugs and sockets to make Han connections

8 products

Audio Receptacles

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

3 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

Circuit Board Connectors

Connect flat flexible cable to circuit boards

10 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valves

Tap into refrigerant lines to drain and fill your system

7 products

Lubricating

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

1 product

Fabricating and Machining

Vise Jaw Liners

Place over vise jaws to protect workpieces from marring

7 products