What Is a Flare Nut?
A flare nut is a connecting component used to securely join pipes or parts.
Typically cylindrical with external ridges or grooves, they are designed for easy tightening by hand and to enhance sealing capability. They are often made of metal or stainless steel for durability.
Flare nuts are primarily used in air conditioning piping. In air conditioning piping, a shape called a “flare connection” is utilized. The end of the pipe expands outward, creating a unique sealing effect between the pipe and its counterpart. This ensures a secure flare connection, helping prevent leaks of high-pressure gas or refrigerant in air conditioning systems.