Coolant Tube O-Ring Size/Composition ER5

[Falco]

Are the O-rings on the coolant tubes that go into the engine specialised in any way? Heat resistant or what have you?

I ask because I have would like to get the bike back together (more or less) tomorrow but I don't know when the official O-rings I ordered will arrive. I do however have some bog standard 14x2mm O-rings that seem to fit; it's hard to tell the exact dimensions since the old ones have become a sort of flattened torus, but I have both larger and smaller ones but I have seen a couple of part listings of the O-ring at 14mm.

I'd as soon get on with getting it back together unless there is a compelling reason not to (the ratio of time in pieces:time on road for this bike is not good so far),

[331X2]

looking at this it's part number 670B2014 which cross references here as 14mm ID x 2.4mm material diameter.

[stinkwheel]

As I remember, they are an odball size.

Also cheap.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[andy_uk]

I got my last pair from these guys :
https://www.cornwallkawasaki.co.uk/shop/shop.php?cmd=showdiagram&id=17298
(part no 670 - scroll down to near the end of the list)
They came within a couple of days. (free postage too)
Don't forget to smear a decent amount of red rubber grease on them before refitting the pipe.
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Aprilia Classic 125, GS500E, ER5-A1, ER5-C4, ER6 & an XJ6 project frame...

[Falco]

Cheers guys, they arrived and no coolant leaking as of yet.

With regard to the size, measured with the calipers they are ID 14 x 2.4mm, which is exactly the same as the bog standard ones out of the general assortment I have.

No visible difference either, worth keeping in mind in a pinch I suppose, though at 50p each its worth having a few in hand.