Press Fit Joints | McMaster-Carr

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1,208 Products

About Duct Connections

1/4" Loc-Line Coolant Hose

Build a custom 1/4" system to deliver coolant, cutting oil, water, or air in any direction.

Duct and Fittings

Standard Duct and Fittings

No need for clamps or connectors—duct and fittings have a male end that is slightly smaller than its female end for simple assembly.

Chemical-Resistant Duct and Fittings

Made of PVC plastic to withstand acids, alkalies, salts, and other corrosive vapors and fumes.

Crush-Resistant Spiral Duct and Fittings

A spiral seam gives this duct greater strength and rigidity than standard duct.

Sure-Seal Spiral Duct and Fittings

Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape.

Oval Duct and Fittings

At about half the height, this oval duct fits in tighter spaces than round and rectangular duct.

Duct Flanges

Bolt flanges to equipment to start a run of duct.

Weld-On Duct Flanges

Weld flanges to equipment to start a run of duct.

Airflow Dampers

Automatic Airflow Dampers

Save energy and increase comfort by heating and cooling only the areas that need it.

Furnace Draft Dampers

Also known as barometric dampers, these dampers improve furnace performance by automatically opening and closing to maintain consistent airflow despite changing environmental conditions.

Airflow Dampers

Regulate airflow by adjusting dampers from fully open to fully closed.

Fire-Rated Airflow Dampers

In the event of a fire, these dampers automatically stop airflow through duct.

Blast Gates

Self-Cleaning Blast Gates

Use in dust collection systems. The slide pushes through the top of the gate to clear debris.

Blast Gates

Control the flow of air and material through duct systems.

Easy-Install Blast Gates

Often added to existing systems, these gates install without disassembling duct. Also known as half gates.

Automatic Blast Gates

More convenient than other blast gates, these automatic gates open and close in sync with dust collectors, fume exhausters, and other machines.

Gas Chimney Vents and Fittings

For use with gas-fired equipment, such as boilers and furnaces, these vent pipes and fittings withstand temperatures up to 400° F. Also known as type B gas vents.