Small nick in o-ring...

Is this a problem? Very small. Will it leak? It's just a small nick on the surface, not easy to photograph.



FYI, this is on EK HDC 16mm fitting, so PETG will be going in to this.

Difficult to say for sure. It depends how tightly the tube compresses against the o-ring once it's inserted. I would always err on the side of caution and get a replacement o-ring since they're cheap, as it's not worth risking a leak whether it occurs in the near or long term.

Thanks. What is the o-ring I need? I can't seem to find on OCUK site. Do they have them?

If it's on the sealing face I wouldn't use it.

Legend said:

Thanks. What is the o-ring I need? I can't seem to find on OCUK site. Do they have them?

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That may be an issue, I'm not sure what size they are exactly (although the outer diameter of the tubing is 16mm, so it can't be far off that). If they're too difficult to find, you might want to bite the bullet and RMA the entire fitting and get a replacement.

I could swap it for the outer o-ring that's inside the screw fixing (they are the same size)... not sure if that's such a good idea though. Just a pain to wait for new one... I'm ready to go otherwise.

If its just the G1/4 end, I have a bag of Bitspower O rings, not sure if its allowed but would be no hassle to throw one in the mail.

Undesirable said:

Difficult to say for sure. It depends how tightly the tube compresses against the o-ring once it's inserted. I would always err on the side of caution and get a replacement o-ring since they're cheap, as it's not worth risking a leak whether it occurs in the near or long term.

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Never ever skimp. You are talking about 1000s of pounds of hardware for the sake of a 10p o ring and the time waiting to get one.

Not worth it IMO.

mingey said:

If its just the G1/4 end, I have a bag of Bitspower O rings, not sure if its allowed but would be no hassle to throw one in the mail.

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That would be excellent of you, I'm sure it is allowed. Happy to pay you for the stamp. Are they the same though? Are they universal? I had an o-ring that came with my res/pump which is the same diameter but it's about twice the thickness.

Ahh, I'm not sure, actually looking at the picture is it the sealing ring, inside the fitting or the screw end ?, I guess the internal one, so I wouldn't know if it would work, but as others said, I would probably just change it, I think it was Greebo's thread above I was just reading and his lovely pool of red coolant under the PC after 2 weeks, better safe than sorry.

mingey said:

Ahh, I'm not sure, actually looking at the picture is it the sealing ring, inside the fitting or the screw end ?, I guess the internal one, so I wouldn't know if it would work, but as others said, I would probably just change it, I think it was Greebo's thread above I was just reading and his lovely pool of red coolant under the PC after 2 weeks, better safe than sorry.

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I've taken it out and it's the same as the one that's inside the HDC fitting screw cap... basically the one you put over the tube, so it's a 16mm one. I don't know if that means they are the same as the Bitspower ones though. You said 1/4, which if that's the size then it's too small, as that's only just over 6mm.

Yeah, I was just reading that... scary, and definitely not something I'd want to risk!