PI ‘O’ ring sizes

[Xmas6]

Hi all

after umpteen years i’m now trying to get the engine to run and after a few timing issues i’ve found there are leaks from the MU hose connections.

What I need are the sizes of all the ‘O’ rings used on the system.

I’ve tried a search but got bogged down - is there a link?

I’d also like some advice on which material to use, I’m well used to Viton from a past life and would be my first choice as I’ve found ptfe rings “ creep” under pressure but I’m open to others advice and experience.

Please encourage my laziness or it’s a strip down and measure.

Thanks in advance 

Neil

[Mike C]

I had my PI system rebuilt with Viton  elastomers. Viton seems to work well with modern fuels, I would have had thought PTFE would be too hard for use in  PI system components- the original elastomers might have been made of nitrile.   Can't help with the sizes unfortunately.

[Waldi]

You can buy these O-rings from specialists like Revington and Wittor and possibly from Neil Ferguson.

Viton-B is the correct grade (not A).

 75 Shore the correct hardness.

Regards,

Waldi