Air Line Couplings | McMaster-Carr

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37,030 Products

Most Likely Products

Hose Fittings

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

2,500 products

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Tube Fittings

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

11,694 products

All Results

Fluid Handling

Hose Fittings

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

2,500 products

Hose

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

715 products

Hose Ferrules

Crimp on to create a permanent connection between hose and barbed hose fittings

60 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

1 product

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

10 products

Tube Fittings

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

11,694 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

314 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

295 products

Tube Fitting Sleeves

Pair with nuts and fittings to form a secure connection on tubing

294 products

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

47 products

Tube Fitting Rings

Prevent leaks at tubing connection points

33 products

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

78 products

Tube End Plugs

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

190 products

Tube Fitting Sleeve and Nut Kits

Everything you need to create a tight seal between a metal tube and a Yor-Lok fitting

31 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

17,049 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

28 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

619 products

Hose Crimpers

Crimp ferrules onto hose to secure fittings

26 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

88 products

On-Off Valves

Start and stop flow through a line

2,331 products

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Fastening and Joining

Brazing Rings

Snap into metal pipe and tubing to form leak-resistant joints more quickly than with hand-fed alloys

11 products

Power Transmission

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products