Quote Originally Posted by Commando View Post
Cheers Phil,

I've found some o rings but have a choice of 90 hardness or 70?
They are nitrile o rings, which hardness would you recommend?

They are slightly smaller inner diameter and a little thicker which I believe will be beneficial as the orings I got from chambers 0r066 seem to be to lose fitting and presumably why my ram won't hold pressure.

Many thanks for every ones help.

James
As this post may have been aimed at me, I feel I should respond: but in doing so, I plead ignorance because I have never resealed an HW90 ... I tend to collect trivial information 'just in case'. So... as I cannot rule on 70 or 90, my advice is to go with what the more informed people say .. maybe 90.
Mind you, if I was piushed into a corner and only had 70 in stock, I would be sorely tempted to try them, enen if it meant I had to get 90 shore later. But that is just me ...

Cheers, Phil