Is this normal?

[itsjeff]

So i own the ek tubing and the ek torque fittings and i always chamfer my tubes really good before installation. Its just i noticed when installing the tubing i get scratches like that when securing the fitting. https://i.imgur.com/wn48FPq.jpg i noticed on multiple tubes in my build. Im using acrylic. Is that something should i be worried about? When installing the tubes i can hear the tubes slides past the o ring so i know its secured.

[jaslion]

Acrylic scratches super easily so pretty normal. Just make sure you don't get hairline fractures in it as that can cause leakage.