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Tube Flaring

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Many industries require the use of pipes and tubing in a flow system and therefore the ability to connect pipes and tubes without leakage is important. Read More…

Tube Flaring Tube flaring is the process of tube fabricating, or tube end forming, used to form an extremely tight seal at the end of a pipe or tube.
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Leading Manufacturers

Apple Valley, CA  |  760-948-4220

As tube fabrication experts, we can solve your fabrication problems with ease! We take our product quality seriously, as we started our company sourcing tube products for the Apollo project.

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Tube Bending Technology $$$

New Berlin, WI  |  800-879-4418

Founded in 1990, Sharpe Products is an ISO 9001:2015 certified company specializing in industrial and commercial pipe and tube bending, laser cutting, end-forming or other custom fabrication services. In addition, we offer a robust line of architectural handrail fittings and accessories such as brackets, connectors, disks, end-caps, flanges, newel caps and spheres.

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Sharpe Products $$$

Chicago, IL  |  800-798-4504

Chicago Metal Rolled Products is a tube fabricator specializing in tube bending, pipe bending, beams, channels, rolling, and we offer tube assemblies and pipe coils. Our sheet metal pipe fabrication includes welding and lockseaming. We provide the best in service, quality, delivery and value.

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Chicago Metal Rolled Products $$$

Warren, MI  |  586-775-0244

Established in 1967, Tube-Co. offers precision tube cutting capabilities. We currently process fabricated tubular assemblies including bending and end forming. We are ISO 9001/2000 certified, and we are committed to quality, service and customer satisfaction.

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TubeCo. Inc. $$$

Dayton, OH  |  937-233-8300

JBK Manufacturing is a supplier of precision CNC machined parts and fabrications. Since our founding in 1981, our customer base has expanded from an aerospace contract to include a host of commercial and industrial markets, defense, energy, oil, and paper industries.

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JBK Manufacturing & Development Co. $$$

Lisle , IL  |  800-739-9130

Here at Zeman Manufacturing Company we offer a number of services and products including: tube bending, tube end forming, tube assembly, tube cutting, hypodermic tube fabrication, tube coiling, tube swaging, lubricating oil cups, metal tube spacers and custom miniature headers. If you have any specialized requests then give one of our representatives a call today! Please visit our website if you would like more information!

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Zeman Manufacturing Company $$$
placeholder image Tube Bending Technology Sharpe Products Chicago Metal Rolled Products TubeCo. Inc. JBK Manufacturing & Development Co. Zeman Manufacturing Company

Flaring creates a funnel shape at the end of the tube, which is designed to exactly match the dimensions of what the tube is being fitted against in order to create a tight seal. During the installation of the tube, the flare is matched exactly with a threaded fitting. The inside of the tube's flare fits against the cone-shaped end of the fitting.A flare nut then screws the fitting together and brings the flare flush against the joining component. This creates a tight seal between the two pieces and eliminates the need for a gasket between the tube and fitting.

Flaring is a similar process to tube swaging in that a seal is created between two previously unattached tubes and tube components. After joining, liquids and gases are then able to pass through the tube system securely. For tubes that are subject to more wear and tear and are used in rougher environments, double lap flaring can be implemented to make the tube end stronger and give the inner surface of the flare a slightly thicker diameter.

A common flaring tool is used to make both single and double flares, and the most used angle for both is 45°. A die block with holes in it is used for the process. The holes allow different diameters of tubing to be handled correctly. A clamp then locks the ends of the tube into the holes, and makes a clean cut at the end in order for the most precise flaring.

A yoke with a cone-shaped compressor is attached to the die block and fits over the top of the clamped tube end. A t-shaped handle is used to move the compressor screw into the tube under great pressure, forcing a single flare at the end of the tube. The size of the flare depends on how far the end of the tube extends beyond the clamp of the die block.

To create a double lap flare, the process is the same; however the tube is turned slightly by adapters to create the double lap. The process of flaring can be time consuming as the resulting flare has to be big enough to fit snugly against the fitting, but small enough to fit the flare nut threads accurately.

Tube Flaring Informational Video