Morris Minor Owners Club

I am sorry if this is a repost, i know i have read this somewhere but i have been searching for an hour and found nothing.
Which rubber washer/seal do i need to remove from the cylinder wheni fit the brske disks? any links to pictures would be gratefully received.
Many thanks
Martyn

Hmm, it's a while since I did this, but I think it's the small one that goes in first before the piston when assembling.

Yes - it's the little cup seal which sits at the outlet (the opposite end of the bore to the circlip)