Flare fitting

Flare fitting is like putting together two puzzle pieces that fit perfectly.

When you have a tube (like a straw) that you want to connect to something else, you need a way to make sure it stays connected and doesn't leak. Flare fitting is one way to do that.

Flare fittings have two parts: the tube and a nut that goes around the tube. The nut has threads on the inside that match up with threads on the outside of the other thing you're connecting to (like a pipe).

Before you put the nut on, you have to do something called flaring the end of the tube. This means you squash the end of the tube and make a small lip at the edge of it. When you put the nut on, it squeezes down on the lip and holds it really tight against the other thing you're connecting to. This makes a seal that stops any gas or liquid from leaking out.

It's important to use flare fittings in certain situations, like when you're working with high-pressure systems or things that carry gas or liquids that could be dangerous if they leaked out.

So flare fitting is like putting two puzzle pieces together, but instead of a fun picture, you're making a safe and secure connection for important things.