Is double flaring necessary on steel tubing?

A double flare should be used on 5052-O and 6061-T aluminum alloy tubing for all sizes from 1/8 to 3/8 inch outside diameter. This is necessary to prevent cutting off the flare and failure of the tube assembly under operating pressures. Double flaring is not necessary on steel tubing.

Can aluminum fuel line be double flared?

Aluminum tubing is very soft and malleable making it difficult to perform quality double flares. The 37 deg single flare can also be used on all 3 of the mentioned tubing types but requires that you use tubing sleeves and tube nuts to ensure a quality seal.

What is the purpose of a double flare?

The purpose of adding double flared brake lines to a vehicle is to minimize friction wear along with cracking at the flare that has the potential to create a leak within the line. Though bubble flared brake lines also exist, this type of line fitting is primarily found in vehicles driven in Europe.

Can I splice a brake line?

Contrary to popular belief it is NOT illegal to make a new section of brake line and splice it into a non-rusted section of your old brake, as long as you use automotive grade SAE double/inverted flare, SAE “bubble” flare and DIN Single Mushroom flare unions and fittings.

Can You double flare stainless lines?

Line ends must be completely free of burrs and imperfections. Some seasoned tube bending professionals suggest the use of a hacksaw instead of a tubing cutter, because a tubing cutter will work-harden stainless, making it tougher to get a proper flare. It is also virtually impossible to get a good double flare from stainless.

What is a double flare tool?

A Double Flaring Tool, is one of the essential specialty tools who does his own auto repair. With this tool it’s possible to do a professional looking job with brake line or transmission cooling line replacement.

What is a double flare fitting?

A double flare is two thicknesses of tubing created by folding the end of the tubing back onto itself, forming a double thickness flare. The single flare is the most commonly used but the double flare is desirable in some applications where splitting of the tubing while flaring is a possibility.