Flare vs Flareless Fittings

Flare and flareless fittings are compression fittings that are used with tubing that is usually made of soft steel, ductile copper, and aluminum. Whether you utilize a flare or flareless fitting depends on the application at hand. To clear up confusion between these two fittings, this blog will cover their differences, uses, and distinguishing features.

Flare fittings have tapered ends that fit into a flared piece of tubing and are secured into position with a sleeve and nut to produce a pressure-resistant, leak-proof seal. The tubing can achieve a flared design by inserting a flaring tool such as a mandrel or rolling cone and utilizing a cold working procedure.

Due to their high degree of long-term reliability, flare fittings are often used by military and aerospace industries in mission-critical applications and remote locations. More than that, they are a feasible option for implementation in heavy machinery as well as industrial and construction equipment. They are commonly used to connect tubes or hoses in high-temperature and high-pressure applications. Additionally, flare fittings work well for applications requiring the connection of thin- to medium-diameter wall tubing.

Flareless fittings eliminate the need for flare fittings by utilizing a single ferrule and nut to make a connection. Ferrules sometimes come in the form of metal or plastic, narrow circular rings that help fasten or reinforce objects. Flareless fittings are widely used for their straight-forward design, their easy installation and assembly, and for being low maintenance components. Moreover, they are often utilized to connect hydraulic tubes and valves.

Beyond a flareless fitting’s versatile function and simple design, they are the perfect fit for applications that experience high vibration. They are also a better option for thicker tubing that cannot be flared. Fitting selection is highly dependent upon the application at hand. You must consider how tight you require your seal to be, whether leakage will be an issue, the amount of movement, and area of implementation, among other factors.

As previously discussed, flare fittings are ideal for applications that involve excess movement, low- to medium-vibration levels, gas, and high pressures that a flareless fitting cannot handle. Flareless fittings, on the other hand, are suitable for applications that involve little movement, high vibration levels, large tube diameters, and no gas or high pressures.  After selecting the right fitting for your applications, proper installation is paramount. When fittings are correctly installed, you can extend their service lives and reliability.

As flare and flareless fittings are used in a number of industry applications, ensuring that they are working properly is critical. If you find yourself in need of flare and flareless fittings, bearings, tubing, or other connector parts and components, rely on Methodical Purchasing. Methodical Purchasing is a premier part distributor for aviation, marine, and defense industries. Our inventory consists of over 6 billion new, used, obsolete, and hard-to-find parts, all of which have been subjected to a myriad of quality assurance measures, tests, verifications, and assessments.

More than that, Methodical Purchasing operates with a strict NO CHINA SOURCING pledge, ensuring you only receive items of the highest caliber that you can rely on. With our steadfast dedication to quality, we are also an AS9120B, ISO 9001:2015, FAA AC 00-56B, ESD S20.20-2014, and AS 6081:2012 certified and accredited enterprise. Kickoff the procurement process by filling out and submitting an RFQ only any part that sparks your interest for your comparisons. When filling out a form, we ask that you provide as many details as you can regarding the items you wish to purchase, including target prices, desired quantities, and expected shipping time frames. For customers facing a time constraint or AOG situation, we offer expedited shipping services on select in stock parts. Alternatively, you can call or email us directly; we are available 24/7x365!


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November 3, 2021
October 12, 2021

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