What is the purpose of using a flare tool?

• A. To cut the tubing
• B. To bend the tubing
• C. To flare the end of the tube
• D. To deburr the tube

Answer: (C)

The purpose of using a flare tool is to flare the end of the tube, which is essential for creating a proper sealing surface for fluid lines, particularly in high-pressure applications. When the end of a tube is flared, it is expanded outward to create a cone-shaped fitting that can be tightly secured to a corresponding flare fitting. This design helps to ensure a leak-free connection when the mating surfaces are joined under compression.

Flared connections are commonly utilized in various applications, including refrigeration, automotive, and hydraulic systems, where they provide a reliable and durable joint that can withstand high pressures. The flaring process increases surface area for better sealing and enables easy disassembly for maintenance or repair.