What is a flare end fitting?

What is a flare end fitting?

Flare fittings A flare fitting has a tapered end that fits into a flared piece of tubing and is secured in place with a sleeve and flare fitting (threaded nut) to produce a pressure-resistant, leak-tight seal.

What are the two types of brake line flares?

There are two basic types of flares used on OEM automotive brake systems throughout the world. The SAE/double (inverted/45degree) flare and the DIN/ISO bubble flare. We will refer to them as SAE or DIN flare. The most common is the SAE flare.

What degree flare is a an fitting?

37°
The U.S. Air Force, with help from Wright Patterson Air Force base, developed a fitting with 37° flare angle, before WWII, which became known as the “AN” fitting.

Is an fitting same as flare?

Technically speaking, AN fittings are manufactured to MIL-F-5509, and industrial 37-degree flare fittings are manufactured to meet SAE J514/ISO-8434-2. (Learn how to cross reference Military Specification numbers with this Air-Way tutorial.) The most notable difference between these standards are in the threads.

Do flare fittings need Teflon tape?

Do not use Teflon ® tape or pipe sealant on any flare ends because you will not obtain a leak-free seal. Keep flare end of fitting free of grease, oil and thread sealant. Use a wrench only on the hex surfaces of the fittings.

Do JIC fittings need Teflon tape?

Registered User. You don’t need or should use any teflon tape or pipe dope on hydraulic fittings. Neither are designed for those kinds of pressures and using them could create a less then perfect mating between connection surfaces causing more harm than good.

How reliable are compression fittings?

Although compression fittings are generally considered more reliable than threaded fittings, there are some potential problems. In general, compression fittings are not as resistant to vibration as soldered or welded fittings. Repeated bending may cause the ferrule to lose its grip on the tube.

What kind of fitting is a flare fitting?

Flare fitting. Flare fittings are a type of compression fitting used with metal tubing, usually soft steel, ductile (soft) copper and aluminum, though other materials are also used. Tube flaring is considered to be a type of forging operation, and is usually a cold working procedure. During assembly, a flare nut is used to secure…

What’s the proper assembly for a 37° flare?

Proper 37° flare fittings assembly and installation steps: Step 1: Check your flared tube, if applicable. Step 2: Align the flare ends and tighten. Step 3: Mark the nut. Step 4: Tighten using recommended flats. Step 5: Make a second mark on the fitting.

What’s the difference between single and double flares?

If you are fitting aftermarket/high performance parts you may run into 37 degree flares. The 37 degree flare was standardized as A.N. (Army/Navy) during WWII for aircraft use.AN/37 degree nuts and fittings accept single and double flares. It is acceptable practice to single flare Cunifer™ (seamless) brake line for use with AN/37 degree fittings.

How to build a 37° flare hydraulic fitting?

Detailed instructions for proper assembly and installation of 37° Flare hydraulic fittings using the flats method. Step 1: Check your flared tube, if applicable. If connecting to a flared tube, start by verifying that the tube end is properly flared. The flare should be reasonably square and concentric with the other diameter of the tube.

What kind of fittings are used for flares?

Flare AN Seals (also known as Flare-O O-Rings, see above) are for 37° flare fittings (sometimes referred to as JIC fittings) meet SAE J514 and ISO 8434-2 and can be used with inch or metric tube and are most commonly made of Buna-N or Viton material.

What do you call 45 degree flared fittings?

Fittings are also known as inverted 45° flared fittings, refrigeration fittings, and SAE fittings. To assemble, place the nut (sold separately) on the tubing, flare the end of the tubing, then insert the tubing into the fitting and tighten the nut.

How big are the threads in a flare fitting?

A. The 15/16″-16 male flare thread measures 15/16″ diameter from the outside of the male threads. The flare threads have 16 threads per inch. The actual opening through the fitting is 1/2″ inside diameter for the gas to flow through. Gas appliance connectors larger than 1/2″ O.D. use special flare fittings designed for gas use only.

What does back side of SAE flare look like?

If your brake line looks like a tiny funnel going into the ID of the tubing, and the back side of the flare is at a 45 degree angle, then it is the SAE flare.