Air Couplings | McMaster-Carr

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37,018 Products

Fluid Handling

Hose Fittings

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

2,497 products

Hose

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

715 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

1 product

Hose Ferrules

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

60 products

Hose Fitting Nuts

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

10 products

Tube and Tube Fittings

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

12,986 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

2,318 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 unthreaded pipe fittings for an extra-strong, leak-resistant connection

5 products

Power Transmission

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products