O ring on Mk1 speedo

[rolesyboy]

Over the years I’ve dismantled lots of Minis.
I seem to recall a black o ring that sat on top of the chrome bezel/ring on a Mk1 speedo.
I’d that correct? If so where should it be located and what was its purpose? I presume it was to go between the nacelle steel plate and the cream speedo pod to minimise vibration but that’s a guess.
The part number is 17H1283
The parts diagrams don’t seem to indicate where it should live. Might as well put one in while it’s in bits
Thanks. Mark

[gs.davies]

I'd have thought it was a gasket to seal the speedometer into the smaller binnacle.

[rolesyboy]

I’m not sure Gary hence the question. It must definitely goes somewhere in that vicinity but not dead clear where

[Peter Laidler]

Ah, yes..... You can buy the 2 or 3mm diameter rubber as a length on Ebay. Just cut a suitable length off and join the ends with superglue. Perfect. You can also do the same for the two smaller instruments.

And here's another thing too. Using a different thickness/diameter, you can use it to replace the gasket between the bezel and the glass. I seem to remember that 5mm is the dia that fits between the bezel and glass on the speedo. Dead easy, done it a zillion times Roley

[Polarsilver]

Agree about that Speedo O Ring .. perhaps fitted OE to stop a Rattle or Draft ?

[gs.davies]

Capture.PNG

Like it's shown here, for the 850, it goes on from the front, presumably by a couple of MM before being pushed into place when the clock is inserted into the binnacle. And what a fine job it does of keeping the fuel vapour fumes from the carb out

Reminds me, another bit to order for my car, though I think a strip of butyl tape might work better as a seal.

[1071bob]

It goes here, as mentioned before it stops the fumes. I've got some O rings here for the price of a stamp.

[rolesyboy]

Cheers Bob. I will message you