Cuprofit not firm fit, is that normal?

[piper64]

For the first time, I used copper push fit fittings and notice they are not as firm as I would like. Water pressure helps, but they don't inspire much confidence.

It's just the rubber ring that creates a seal under pressure and the teeth stop the pipe blowing off, right?

 

[footprints]

Yes as you say the ring is the seal the grip ring is just there to stop slipping off. Oh and to cut a neat ring around the apprentice's finger when he sticks it in the hole, moments after you have told him not to

 

[piper64]

Thanks. I'm not sure I'm too impressed by them compared to soldered joints.