Seal the Deal: The Differences Between Hy-Lok’s Flareless & Flared Tube Fittings

Different industries require different types of fittings and valve components, but how do you know which fitting is needed for your connection? Hy-Lok manufactures and sells a wide range of high-pressure fittings and valves suitable for every industry we service.

Keep reading to learn about the difference between flared and flareless tube fittings.

Flareless Tube Fittings

Flareless tube fittings, commonly referred to as compression fittings, use a single nut and ferrule for a leak-free connection. Flareless tube fittings eliminate the need for a flare in hydraulic settings and are extensively used to connect tubing with threaded components. Used in high-vibration settings, Hy-Lok’s flareless tube fittings perform reliably and efficiently under pressure bursts, thermal shocks and extreme vibrations.

Flared Tube Fittings

Industries like chemical, natural gas, and nitrogen use flared tube fittings in critical applications where there is no room for leakage. Ensuring a leak-free seal is vital to the user’s safety, system reliability and temperature control. As flared fittings are known for their reliability, they are typically used as a long-term hose or tube connection for inaccessible locations.

Flared fittings are designed to maintain a tight seal under severe vibrations, thermal shocks, and pressure bursts. They are most commonly found in demanding fluid control systems, like natural gas lines, hydraulic ramps, commercial vehicles, and aerospace technology, to name a few.

What is SAE J514?

Previously known as the Society of Automotive Engineers, SAE International is responsible for developing standards for the automotive, commercial vehicle and aerospace industries. The SAE J514 standard covers the general and dimensional specifications for both 37-degree-flared JIC fittings and flareless hydraulic tube fittings.

As the 37-degree flared JIC fittings meet both the JIC and SAE J514 specifications, they are commonly recognized as the industry standard flared fitting used in critical applications. SAE J514 fittings provide leakproof, full-flow connections with a pressure rating of up to 8700 psi. Tightening an SAE J514 fitting ensures the tube’s alignment with the fitting’s axis, therefore reducing mechanical strain and decreasing vibrations.

Rigorous Quality Control & Testing

All Hy-Lok products undergo a rigorous series of high-pressure stress tests before shipping, including hydrostatic and pneumatic seat tests. Hy-Lok is dedicated to providing our customers with a high-quality, efficient and reliable product they can count on. Regarding leak-free fittings you can trust, Hy-Lok is the first choice on the market.

Hy-Lok’s products are built to last and are cross-compatible with fittings from other name brands like Swagelok. If you need to replace a fitting or valve, choose Hy-Lok.

Hy-Lok Quality You Can Trust

For over 40 years, Hy-Lok has been leading the fitting and valve industry by manufacturing, engineering and selling exceptional-quality fitting and valve solutions for industries across the world. We have consistently led the industry in technological innovations and supreme manufacturing capabilities.

Hy-Lok is one of the only manufacturers able to design and manufacture bespoke custom-fabricated valves for even the most demanding or unusual applications. Whether it is a stock or custom product, Hy-Lok’s products can be configured to meet your application’s specific requirements.

Contact us today to learn more about Hy-Lok’s flared tube fittings.