Copper Caps | McMaster-Carr

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1,446 Products

Fluid Handling

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Pipe Plugs

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

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Tube End Plugs

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

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Tubing Flow Stops

Tubing Flow Stops

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

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Sights

Observe and monitor the contents of pipes, tanks, and other containers

Heat Exchanger Plugs

Heat Exchanger Plugs

Plug leaky internal tubes in heat exchangers

Breather Vents

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

Electrical

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Cover unused holes in enclosures to keep out dust, dirt, and moisture

Fastening and Joining

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Safety Equipment

Fire Hydrant Caps

Fire Hydrant Caps

Pair with a hook-style spanner wrench to quickly cover and uncover fire hydrants

Fire Hydrant Plugs

Fire Hydrant Plugs

Pair with a hook-style spanner wrench to quickly seal fire hydrants and washdown equipment

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Material Handling

Valve Stem Caps

Valve Stem Caps

Keep dust and debris out of tire valves

Lubricating

Grease Fitting Adapters

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

Grease Fittings

Grease Fittings

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

Containers, Storage, and Furniture

Drum Locks

Secure drum lids and openings to prevent tampering

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valves

Air Conditioner Service Valves

Tap into refrigerant lines to drain and fill your system

Fabricating and Machining

Vise Jaw Liners

Vise Jaw Liners

Place over vise jaws to protect workpieces from marring

Facility and Grounds Maintenance

Sink Drains

Empty liquids from sinks into sewer lines

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)