KF Elbows | McMaster-Carr

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144 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Also known as KF, QF, and NW fittings, these fittings are for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases.

Rings for Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Use these rings with quick-clamp high-vacuum fittings.

Clamps for Quick-Clamp High-Vacuum Fittings

Connect quick-clamp fittings in high-vacuum applications.

Quick-Clamp High-Vacuum
Fittings for Aluminum Tubing

For use in high-vacuum systems, these fittings use a metal reinforced O-ring to create an airtight seal. Also known as KF, QF, and NW fittings, they’re used for high-vacuum applications such as vacuum coating and heat treating, leak testing, and analyzing gases.

Gradual On/Off Valves with
Quick-Clamp Fittings for High Vacuum

Also known as vacuum isolation valves, these block flow so you can install and remove gauges from your system. They can also be used to add or vent gases in high-vacuum systems.

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How to Identify and Measure Fittings

Control of Liquids, Gases, and Solids

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Rings for Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Clamps for Quick-Clamp High-Vacuum Fittings

Quick-Clamp High-Vacuum
Fittings for Aluminum Tubing

Gradual On/Off Valves with
Quick-Clamp Fittings for High Vacuum

How to Identify and Measure Fittings

Control of Liquids, Gases, and Solids

Quick-Clamp High-VacuumFittings for Stainless Steel Tubing

Rings for Quick-Clamp High-VacuumFittings for Stainless Steel Tubing

Clamps for Quick-Clamp High-Vacuum Fittings

Quick-Clamp High-VacuumFittings for Aluminum Tubing

Gradual On/Off Valves withQuick-Clamp Fittings for High Vacuum

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Rings for Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Quick-Clamp High-Vacuum
Fittings for Aluminum Tubing

Gradual On/Off Valves with
Quick-Clamp Fittings for High Vacuum