The SAE Flareless (aka. “bite type”) tube fitting is a three-piece system (nut, ferrule, and body) that works by forcing the ferrule cutting edge into the tubing wall to create a seal. ... Flareless fittings do not require a flaring operation and are used on medium to heavy walled tubing.

How do you install Flareless fittings?

Step 1: Lubricate thread and cone of the fitting body. Step 3: Lubricate ferrule with system fluid or a compatible lubricant. Step 5: Manually screw nut onto fitting body until finger tight. Step 7: Hold tube steady against internal shoulder of fitting body and tighten nut an additional 1¾ turns.

What is Flareless fitting?

Also commonly known as compression fittings, flareless fittings are used in medium to high-pressure applications. They have comprised of a nut, single or double ferrule and the fitting body. The nut and ferrule(s) slide over a tube with an OD that matches the ID of the receiving fitting.