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Flared tube fittings are essential components for creating reliable, leak-free connections in various fluid and gas systems. Selecting the appropriate fitting ensures the integrity and safety of your industrial applications, preventing costly failures and downtime. This guide will help you navigate the key considerations for choosing the best flared tube fittings for your needs.
Specification: Material: Brass;Color: Brass;Total Size: 34x21mm/1.34x0.83inch(L*W);Flare Tube OD Size:3/8 female flare X 1/2 male flare; Packing List: 1Pcs x Brass Flare Tube Fitting
Advantage: The tube fitting is made from thickened brass, strong, durable, anti-corrosion, and with high and low-temperature resistance. It can be used under a temperature range: -53℃ to 121℃ (-65 to 250 degrees Fahrenheit); Clear and standard threads...
Application: This brass flare tube fitting is widely used in pipe connections for air conditioning, hydraulic and pneumatic systems, HVAC, automotive, humidifiers, grills, and fire pit. Also, the union fitting is suitable for fuel, gas systems, and...
Instruction: Connect the male flare end to a flared pipe with brass nut(not included) or connect it to a female flare end with same thread size directly. Connect the female flare end to a male flare end with same thread size directly.
Wide Compatibility: This half union coupling provides a secure, quick-connect solution between flared tubing and threaded pipes. Engineered for high-pressure propane, LP gas, natural gas, fuel delivery, refrigeration, plumbing, and vacuum applications
High-Grade Brass: Made from high-purity brass with low magnetic permeability, excellent corrosion resistance, and thermal ductility. These brass flare fitting are precision-machined under strict quality control to ensure reliable, long-lasting performance
Leak-Proof Connection: Precision flare half union fitting delivers durable, leak-tight seals for fuel, oil, gas, air, and fluid lines. Compatible with copper, brass, aluminum, and steel tubing, built to withstand high pressure and harsh conditions
High Durability: Rated for pressures up to 1200 PSI and operating temperatures from -65°F to +250°F, this brass flared tube fitting delivers reliable performance and long service life in tough, high-pressure systems
[Material]: Our flare gasket is crafted from copper. It is wear-resistant, exhibits hardness, and is not prone to deformation, ensuring long-lasting service. It has excellent ductility and corrosion resistance and is beneficial for metal-to-metal sealing
[45 Degree Flare]: The copper flare gasket is used for sealing 45-degree flare pipe fitting. Widely used in air conditioners, refrigeration machines, gas, and hydraulic applications
[Widely Used]: The flare gasket is applicable for use with brass, aluminum, chopper, and welded steel hydraulic tubing that can be flared, including flared copper pipes, flare nuts, flare plugs, and flare adapters, among others
SECURE, LEAK-FREE CONNECTION: Provides reliable sealing for fuel, oil, LP, and natural gas applications, ensuring a stable joint even in high-pressure, vibrating environments. Ideal for SAE flare connections and flare fittings.
PREMIUM BRASS CONSTRUCTION: Crafted from high-quality brass for superior corrosion resistance, high-temperature ductility, and long-lasting durability. A robust flare nut solution and effective flare tube fitting alternative.
VERSATILE COMPATIBILITY: Works seamlessly with aluminum, copper, brass, and welded steel tubing, making it perfect for plumbing and HVAC projects. A top choice among hvac flare fittings and copper tube fittings.
ROBUST PERFORMANCE: Engineered to withstand up to 150 PSI and operate within a temperature range of -65°F to +250°F, ensuring dependable performance under demanding conditions. Excellent for flared tube fittings in critical applications.
【Flare Thread】The positive nature of the connection with the flare on the tube clamped between the nut and the body makes for extreme dependability and safety.
【Material】Heavy Duty Brass, firm and durable. Brass for corrosion resistance, high temperature ductility and low magnetic permeability.
【Temperature Range】From -53℃ to 121℃ (-65℉ to 250℉).
Abundant Quantity and Diverse Sizes: our package includes 6 different sizes of brass flare plugs; Sizes include 1/4", 3/4", 5/16", 3/8", 1/2", and 5/8"; This variety allows you to have the exact brass fittings suitable for your needs
Efficient Operation: the brass flare tub fitting is designed to be tightly clamped between the nut and valve body on the pipe; This way of connecting signifies high reliability and safety, improving the efficiency of your operations
Alternative to Welding Joints: if you don't want to, or it's not practical to use flare torch type joints, our brass plugs are the ideal alternatives; They provide solid and safe connections without the need for open flame
Brass Flare Plug: our brass flare plug is crafted from nice, solid brass; It promises a longer lifespan compared to iron and galvanized iron fittings; Its gold color exhibits a quality brass that's not just sturdy and durable, but also aesthetically...
【Package Include】2PCS brass 3/8" flare female to 3/8" flare male swivel 90° elbow union.
【90° Elbow & 360° Swivel】90 degrees elbow design can easily change the direction of the pipeline, while 360 degrees swivel greatly improves flexibility.
【Solid Brass】The fittings are made of solid brass, which is thicker and stronger, durable, threads are deep and accurate, high corrosion resistance, low magnetic permeability and high temperature ductility.
【Solid Connection】The positive nature of the connection with the flare on the tube clamped between the nut and the body makes for extreme dependability and safety.
[Material]: Heavy-duty brass,strong and stable,with corrosion resistance,high temperature ductility and low permeability.
[Features]: The positive nature of the connection with the flare on the tube clamped between the nut and the body makes for extreme dependability and safety.
[Temperature range] :Operating temperature range of -65 to +250 degrees F. Flare fittings are appropriate alternatives for solder type joints where an open flame is either not desired or impractical.
SIZE: 1/4" Flare Male x 3/8" Flare Female, has a 45-degree flare connection on both ends. NOTE: Thread size is a nominal pipe size and it does not represent the actual diameter, please check the size you need before ordering
QUALITY MATERIAL: Solid brass construction for corrosion resistance, high temperature ductility and low magnetic permeability. Suitable for copper, brass, aluminum, and steel tubing
SUPERIOR PERFORMANCE: Precisely milled, threads are tighter, deeper, smoother than regular products, making work easier and more efficient
FUNCTION: Union for connecting and disconnecting two pipes more easily than couplings. Great for using with LP and natural gas, refrigeration, and hydraulic applications
Last update on 2026-10-15 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Flared Tube Fittings
Understanding Flared Fittings
Flared fittings create a seal by deforming a tube end into a cone shape that mates with the fitting body. This mechanical seal is robust and less prone to vibration loosening than some other connection types. They are commonly used in high-pressure, high-vibration applications found in automotive, hydraulic, and pneumatic systems.
Material Considerations
The material of the fitting is crucial for compatibility with the fluid being conveyed and the operating environment. Common materials include:
Brass: Offers good corrosion resistance and is cost-effective for many general applications.
Stainless Steel: Provides superior strength, durability, and resistance to corrosion, making it ideal for harsh environments and aggressive fluids.
Steel (Plated): Often used for general hydraulic applications, offering a balance of strength and cost. Plating enhances corrosion resistance.
Types of Flared Fittings
There are several common configurations to consider:
SAE Double Flare: The standard for most automotive and light hydraulic applications in North America.
Inverted Flare: Features a flare on the inside of the fitting body, often used in automotive brake and fuel lines.
Single Flare: Less common for high-pressure systems but may be found in some low-pressure applications.
Sizing and Compatibility
Proper sizing is paramount. Flared fittings are typically specified by the outside diameter of the tubing they connect. Ensure the fitting size matches the tubing diameter precisely. Also, verify that the fitting's thread size and type (e.g., SAE, NPT) are compatible with the components it will connect to. Consult manufacturer specifications for detailed compatibility information.
Installation Best Practices
Proper installation is key to a leak-free seal. Ensure the tube end is properly flared using the correct tool, creating a uniform cone. The flare should be free of cracks or imperfections. When assembling, use two wrenches – one to hold the fitting body and the other to tighten the nut, preventing stress on the tubing.
Frequently Asked Questions
What is the difference between single and double flare fittings?
A single flare has a single cone, while a double flare creates a double-walled cone on the tube end. Double flares are generally stronger, more durable, and provide a more reliable seal, making them preferred for higher pressure and critical applications.
Can I use brass fittings with all types of fluids?
Brass fittings are suitable for many common fluids like water, air, and certain oils. However, they may not be ideal for aggressive chemicals or high-purity systems where stainless steel might be a better choice due to its superior chemical resistance.
How do I determine the correct size for a flared fitting?
Flared fitting sizes are typically based on the outside diameter of the tubing you are connecting. You need to measure the tubing's outer diameter accurately and select a fitting designed for that specific tubing size.
What tools are needed to install flared fittings?
You will need a tubing cutter to ensure a clean, square cut, a flaring tool to create the appropriate flare on the tube end, and two wrenches for assembly to properly tighten the fitting without damaging the tubing.
Are flared fittings suitable for very high temperatures?
The temperature rating of flared fittings depends heavily on the material and the specific design. Stainless steel fittings generally offer better performance at higher temperatures compared to brass or plated steel.
How tight should I make a flared fitting connection?
Tighten the fitting until it feels snug, then typically an additional 1/2 to 3/4 turn is sufficient for most connections. Over-tightening can damage the flare or the fitting, leading to leaks. It's best to consult the manufacturer's recommendations.
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