NPT Plugs | McMaster-Carr

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3,569 Products

Fluid Handling

Pipe Plugs

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

Pipe Caps

Cover the ends of pipe 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

Tube and Tube Fittings

Tube and Tube Fittings

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

Breather Vents

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

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Pressure-Relief Valves

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

Sights

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

Liquid-Level Gauges

Liquid-Level Gauges

Monitor fluid levels in containers

Drain Valves

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

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Corrosion-Inhibiting Rods and Pads

Corrosion-Inhibiting Rods and Pads

Protect tanks, water heaters, and heat exchangers from rust; also known as sacrificial anodes

Heating Elements

Heating Elements

Turn electrical current into heat

Building and Machinery Hardware

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Protective Caps

Protective Caps

Cover holes at the end of pipe, conduit, and fittings to keep out debris

Electrical

Electrical Enclosure Plugs

Electrical Enclosure Plugs

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

Electrical Enclosure Drains

Electrical Enclosure Drains

Release moisture to keep components dry

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Electrical Connectors and Cords

Electrical Connectors and Cords

Supply power to equipment by combining plugs, sockets, receptacles, and cords

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

Oil Fittings

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

Containers, Storage, and Furniture

Drum-Plug Caps

Access inside drums to fill them

Drum Plugs

Seal drum lid openings

Drum Locks

Secure drum lids and openings to prevent tampering

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