How tight should compression fittings be?

[david31160]

I'm still working on my custom loop and have gotten to installing tubing and I'm confused about how tight the fiting ring should be. Should it touch the barb part of fitting? Picture:

Basically should the fiting with the tube have the compression ring like the one without the tube?

 

[ARikozuM]

My understanding is just past the point of resistance. No tighter, no looser.

[johnny5c]

28 minutes ago, david31160 said:

 

Basically should the fiting with the tube have the compression ring like the one without the tube?

 

The ring will screw in a lot farther without a tube installed so don't over tighten it.

[dmoney1942]

Also don't forget to put the barb on the tube before putting the tub on the fitting. I slapped myself more times than one when I finally got the tubing on and forgot the dang barb lol

[david31160]

3 minutes ago, dmoney1942 said:

Also don't forget to put the barb on the tube before putting the tub on the fitting. I slapped myself more times than one when I finally got the tubing on and forgot the dang barb lol

I've done that 3 times already ?

[dmoney1942]

1 minute ago, david31160 said:

I've done that 3 times already ?

What a pain in the ass that was

[Metallus97]

Use the general PC building rule: only do it Hand thight.

i do +2 turns when I feel the resistance from the barb pressing on the tube.

 

To much pessure can crack your tubing and lead to leaks 

This happened to me and I almost fried my GPU....