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Hardline fittings: incredibly tight?

Discussion in 'Watercooling' started by LuckyBenski, Apr 15, 2018.

  1. LuckyBenski

    Wise Guy

    Joined: Dec 28, 2017

    Posts: 1,166

    Location: London

    Hi all, first post as I've opened an account ages ago but still busy putting together my first WC build!

    I'm using Alphacool hardline fittings (Eiszapfen 16mm) and the same brand frosted acrylic tubing. The fittings have double o-rings, one in the fitting and one under the lock collar. I'm finding it ridiculously hard to fit the tubing into the internal o-rings.

    I've managed to get them in with *extreme* force outside of the PC, with twisting. By heavily bevelling the tubing and wetting it, I've managed to install one or two into the PC but there are areas I simply can't apply that much force, like on the GPU block.

    Am I missing something? When they're in, they're a great fit so I don't think they're supposed to simply sit against that o-ring, though I have my suspicions.

    I've got lots of experience with wood and metal work, so I feel like I know how much force is too much and I'm really not sure it'd be safe to continue.
     
  2. Mcthommo

    Gangster

    Joined: Jan 28, 2015

    Posts: 278

    Doesn’t sound right to me- mine just pop in with a slight amount of force but I am using Phanteks fittings
     
  3. LuckyBenski

    Wise Guy

    Joined: Dec 28, 2017

    Posts: 1,166

    Location: London

    I made a lot of progress yesterday - it seems like one fitting in particular has some moulding marks on the o-ring. All the others I can get tubing into with (very firm) but controlled force.

    I'll try changing the fitting on that connection and see if that helps.

    At least I'll be confident the tubing won't be going anywhere once installed!
     
  4. Smffy

    Wise Guy

    Joined: Dec 4, 2015

    Posts: 2,339

    Location: London

    Did you chamfer the tubing you cut? You should... also just take some distilled water or fluid and wet a clean finger in it and run it round the o-rings before you fit, much easier.

    Chamfer though, too much force without it you might be damaging the seals.
     
  5. LuckyBenski

    Wise Guy

    Joined: Dec 28, 2017

    Posts: 1,166

    Location: London

    Yep, I've tried going to the extreme of a huge chamfer and rounding its edge off afterwards, then smoothing it.

    I'll try changing the fitting tonight because all the others with moderate chamfers go in tight, but consistently.
     
  6. fastboy

    Hitman

    Joined: Oct 29, 2005

    Posts: 824

    Location: wakefield

    just be careful with acrylic,it is brittle and can splinter or hairline crack with a bit of force.