Brass Plugs | McMaster-Carr

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2,053 Products

Fluid Handling

Pipe Plugs

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

266 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

67 products

Pipe Flanges

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

2 products

Hose

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

48 products

Hose Fittings

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

199 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

18 products

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

212 products

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

9 products

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

35 products

Heat Exchanger Plugs

Plug leaky internal tubes in heat exchangers

17 products

Heating Elements

Turn electrical current into heat

42 products

Breather Vents

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

8 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

2 products

Sights

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

63 products

Electrical

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

10 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

81 products

Cable Entry Panels

Pass multiple cords into an enclosure while sealing out moisture, dust, and other contaminants

3 products

Binding Posts

Test circuits before making permanent connections

12 products

Safety Equipment

Fire Hydrant Plugs

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

3 products

Fire Hydrant Caps

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

3 products

Lubricating

Grease Fitting Adapters

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

12 products

Grease Fittings

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

29 products

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

2 products

Oil Fittings

Install in engine blocks and other machinery to pour in oil while keeping dust out

1 product

Fastening and Joining

Standoff Caps

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

1 product

Threaded Inserts

Create new threads or repair stripped threads

466 products

Fabric Snaps

Join soft, heavy fabrics such as leather and canvas

44 products

Turn-Button Fastener Bases

Mate with turn-button fastener eyelets to secure fabrics to solid surfaces

6 products

Turn-Button Fastener Eyelets

Pair with turn-button fastener bases to secure fabrics to solid surfaces

3 products

Rivets

Join materials together permanently, especially when too thin or fragile to fasten with screws

5 products

Drum Plug Wrenches

Install and remove screw-in drum plugs; also known as bung wrenches

3 products

Containers, Storage, and Furniture

Drum Locks

Secure drum lids and openings to prevent tampering

2 products

Material Handling

Wire Rope Plugs

Secure wire rope in end fittings with a plug-lock connection

10 products

Building and Machinery Hardware

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

120 products

Facility and Grounds Maintenance

Sink Drains

Empty liquids from sinks into sewer lines

4 products