Shimano Caliper O-ring size

Husky430

E*POWAH Elite
Jul 8, 2019
643
1,051
Glasshouse Mts - Australia
Had a bit of a 'mare and to cut a long story short after "borrowing' my wifes caliper, as I broke a ceramic piston on my rear caliper, I've managed to mangle the O-rings that go either side of the banjo bolt that is on the end of the brake line that then goes into the caliper. I've order some on line but can't wait for them to get here to get us both mobile again.
Looking at them and just using a ruler it seems that they are 9mm outside diameter and 1mm thick, 7mm inside diameter. Have looked on line to confirm this but can't find anything to verify that this is right. Want to see if I can get some from a bearing shop or somewhere similar but would like to know the exact size before running around all the industrial estates chasing some.
Hoping that one of you knowledgeable readers might know this for sure.
The caliper is an XT 8120 and my wifes is a Zee, both 4 pot calipers and the O-ring is the same size.
 

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